By choosing I Accept, you consent to our use of cookies and other tracking technologies.

# 155

Number 155 (one hundred fifty-five) is an odd three-digits composite number and natural number following 154 and preceding 156.

## Properties of the number 155

 Nominal 155 Cardinal one hundred fifty-five Cardinalone hundred fifty-five Ordinal 155th Number of digits 3 Sum of digits 11 Product of digits 25 Number parity Odd
Calculation was done in 0.0000340939 seconds

## Prime Factorization of 155

 Prime factorization 5 x 31 Prime factors 5, 31 Number of distinct prime factors ω(n) 2 Total number of prime factors Ω(n) 2 Sum of prime factors 36 Product of prime factors 155
Calculation was done in 0.0000197887 seconds

## Divisors of 155

 List of proper divisors 1, 5, 31 List of all dividers 1, 5, 31, 155 Number of divisors d(n) 4 Sum of all divisors σ(n) 192 Aliquot sum 37 155 is a deficient number , since it is larger than the sum of its proper divisors (37). Its deficiency is 118.
Calculation was done in 0.0000138283 seconds

## Prime numbers

 Is 155 a prime number? No Is 155 a semiprime number? Yes Is 155 a Chen prime number? No Is 155 a Mersenne prime number? No
Calculation was done in 0.0000238419 seconds

## Sequences

 Is 155 a Catalan number? No Is 155 a Fibonacci number? No Is 155 a Idoneal number? No
Calculation was done in 0.0000050068 seconds

## Number theory

Number theory is a branch of pure mathematics devoted primarily to the study of the integers and integer-valued functions.
 155 is not a Happy number 155 is not a Humble number 155 is not a Münchhausen number 155 is not a Perfect number 155 is not a Perfect square 155 is not a Palindrome
Calculation was done in 0.0067541599 seconds

## Numeric Bases of 155

In mathematics, a base or radix of a numeral system is the number of unique digits, including zero, used to represent numbers in that system.
BaseSystemValue
2Binary100110112
3Ternary122023
4Quaternary21234
5Quinary11105
6Senary4156
7Septenary3117
8Octal2338
9Nonary1829
10Decimal155
12Duodecimal10b12
20Vigesimal7f20
36Base364b36
60Sexagesimal2Z60
Calculation was done in 0.0000200272 seconds

## Mathematical operations

Mathematical operations are actions that are performed on numbers or mathematical expressions to find a numerical result.
 Square of 155 (n2) 24025 Cube of 155 (n3) 3.72388e+06 Square root of 155 12.4499 Natural Logarithm (ln) of 155 5.04343 Decimal Logarithm (log) of 155 2.19033
Calculation was done in 0.0000059605 seconds

## Trigonometry

Trigonometry is the study of the relationship between the angles and sides of a triangle.
 Sine of 155 -0.873312 Cosecant of 155 -1.14507 Cosine of 155 -0.487161 Secant of 155 -2.05271 Tangent of 155 1.79265 Cotangent of 155 0.557832
Calculation was done in 0.0000131130 seconds

## Number parity

Parity is the property of an integer of whether it is even or odd.

No

### Is 155 an Odd Number?

Yes, the number 155 is an odd number.
Total number of all odd numbers from 1 to 155 is 78
Sum of all the odd numbers from 1 to 155 are 6084
The sum of all odd numbers is a perfect square: 6084 = 78
An odd number is any integer (a whole number) that cannot be divided by 2 evenly. Odd numbers are the opposite of even numbers.
Calculation was done in 0.0000059605 seconds

## Ban number

In recreational mathematics, a ban number is a number that does not contain a particular letter when spelled out in English; in other words, the letter is "banned".
 The spelling of 155 in words is "one hundred fifty-five", meaning that: 155 is an aban number (a number without the letter a) 155 is not an eban number (as it contains the letter e) 155 is not an iban number (as it contains the letter i) 155 is not an oban number (as it contains the letter o) 155 is not a tban number (as it contains the letter t) 155 is not an uban number (as it contains the letter u)
Calculation was done in 0.0000028610 seconds

## Numeral systems

How to write 155 in other number systems?
 Bengali numerals ১৫৫ Eastern Arabic numerals ١٥٥ Hieroglyphs numeralsused in Ancient Egypt 𓍢𓎊𓏾 Khmer numerals ១៥៥ Japanese numerals 百五十五 Roman numerals CLV Thai numerals ๑๕๕
Calculation was done in 0.0000979900 seconds

## Translation

How do you say 155 in 38 different languages?
 Arabic مائة و خمسة و خمسون Croatian sto pedeset i pet Czech sto padesát pět Danish et hundrede fem og halvtreds Dutch honderdvijfenvijftig Estonian alafa ɖeka blaatɔ̃ vɔ atɔ̃ Faroese eitt­hundrað­og­fimmti­fimm Filipino isáng daán at limáng pû’t limá Finnish sata­viisi­kymmentä­viisi French cent cinquante-cinq Greek εκατόν πενήντα πέντε German ein­hundert­fünf­und­fünfzig Hebrew מאה חמישים וחמש Hindi एक सौ पचपन Hungarian száz­ötven­öt Icelandic eitt­hundrað og fimmtíu og fimm Indonesian seratus lima puluh lima Italian centocinquantacinque Japanese 百五十五 Korean 백오십오 Latvian simt piecdesmit pieci Lithuanian šimtas penkiasdešimt penki Norwegian hundre og femti­fem Persian صد و پنجاه و پنج Polish sto pięćdziesiąt pięć Portuguese cento e cinquenta e cinco Romanian una sută cincizeci şi cinci Russian сто пятьдесят пять Serbian сто педесет и пет Slovak jedna­sto päťdesiat­päť Slovene sto petdeset pet Spanish ciento cincuenta y cinco Swahili mia moja na hamsini na tano Swedish enhundrafemtiofem Thai หนึ่ง​ร้อย​ห้า​สิบ​ห้า Turkish yüz elli beş Ukrainian сто пʼятдесят пʼять Vietnamese một trăm năm mươi lăm
Calculation was done in 0.0154759884 seconds

## Miscellaneous

 Number 155 reversed 551 ASCII Code 155 › Unicode Character U+009B › Hexadecimal color (shorthand) #115555 Unix Timestamp Thu, 01 Jan 1970 00:02:35 +0000
Calculation was done in 0.0000269413 seconds