61
Number 61 (sixty-one) is an odd two-digits prime number and natural number following 60 and preceding 62.
| Nominal | 61 |
| Cardinal | sixty-one |
| Ordinal | 61st |
| Number of digits | 2 |
| Sum of digits | 7 |
| Product of digits | 6 |
| Number parity | Odd |
Calculation was done in 0.0000319481 seconds
| Prime factorization | 61 |
| Prime factors | 61 |
| Number of distinct prime factors ω(n) | 1 |
| Total number of prime factors Ω(n) | 1 |
| Sum of prime factors | 61 |
| Product of prime factors | 61 |
Calculation was done in 0.0000090599 seconds
| List of proper divisors | 1 |
| List of all dividers | 1, 61 |
| Number of divisors d(n) | 2 |
| Sum of all divisors σ(n) | 62 |
| Aliquot sum | 1 |
| 61 is a deficient number , since it is larger than the sum of its proper divisors (1). Its deficiency is 60. |
Calculation was done in 0.0000190735 seconds
| Is 61 a prime number? | Yes |
| Is 61 a semiprime number? | No |
| Is 61 a Chen prime number? | No |
| Is 61 a Mersenne prime number? | Yes: M8 |
Calculation was done in 0.0000140667 seconds
| Is 61 a Catalan number? | No |
| Is 61 a Fibonacci number? | No |
| Is 61 a Idoneal number? | No |
Calculation was done in 0.0000038147 seconds
| 61 is not a Happy number |
| 61 is not a Humble number |
| 61 is not a Münchhausen number |
| 61 is not a Perfect number |
| 61 is not a Perfect square |
| 61 is not a Palindrome |
Calculation was done in 0.0042498112 seconds
| Base | System | Value |
|---|
| 2 | Binary | 1111012 |
| 3 | Ternary | 20213 |
| 4 | Quaternary | 3314 |
| 5 | Quinary | 2215 |
| 6 | Senary | 1416 |
| 7 | Septenary | 1157 |
| 8 | Octal | 758 |
| 9 | Nonary | 679 |
| 10 | Decimal | 61 |
| 12 | Duodecimal | 5112 |
| 16 | Hexadecimal | 3d16 |
| 20 | Vigesimal | 3120 |
| 36 | Base36 | 1p36 |
| 60 | Sexagesimal | 1160 |
Calculation was done in 0.0000178814 seconds
| Square of 61 (n2) | 3721 |
| Cube of 61 (n3) | 226981 |
| Square root of 61 | 7.8102496759067 |
| Natural Logarithm (ln) of 61 | 4.1108738641733 |
| Decimal Logarithm (log) of 61 | 1.7853298350108 |
Calculation was done in 0.0000040531 seconds
| Sine of 61 | -0.96611777000839 |
| Cosecant of 61 | -1.0350704966241 |
| Cosine of 61 | -0.25810163593827 |
| Secant of 61 | -3.8744427030256 |
| Tangent of 61 | 3.7431679442724 |
| Cotangent of 61 | 0.26715338849013 |
Calculation was done in 0.0000090599 seconds
Is 61 an Odd Number?
Yes, the number 61 is an odd number.
Total number of all odd numbers from 1 to 61 is
31Sum of all the odd numbers from 1 to 61 are
961The sum of all odd numbers is a perfect square: 961 = 31
An odd number is any integer (a whole number) that cannot be divided by 2 evenly. Odd numbers are the opposite of even numbers.Previous odd number is
59
Calculation was done in 0.0000071526 seconds
| The spelling of 61 in words is "sixty-one", meaning that: |
| 61 is an aban number (a number without the letter a) |
| 61 is not an eban number (as it contains the letter e) |
| 61 is not an iban number (as it contains the letter i) |
| 61 is not an oban number (as it contains the letter o) |
| 61 is not a tban number (as it contains the letter t) |
| 61 is an uban number (a number without the letter u) |
Calculation was done in 0.0000028610 seconds
| Bengali numerals | ৬১ |
| Eastern Arabic numerals | ٦١ |
| Hieroglyphs numeralsused in Ancient Egypt | 𓎋𓏺 |
| Khmer numerals | ៦១ |
| Japanese numerals | 六十一 |
| Roman numerals | LXI |
| Thai numerals | ๖๑ |
Calculation was done in 0.0000829697 seconds
| Arabic | واحد و ستون |
| Croatian | šezdeset i jedan |
| Czech | šedesát jeden |
| Danish | en og tres |
| Dutch | éénenzestig |
| Estonian | blaade vɔ ɖekɛ |
| Faroese | sekstiein |
| Filipino | anim na pû’t isá |
| Finnish | kuusikymmentäyksi |
| French | soixante et un |
| Greek | εξήντα ένα |
| German | einundsechzig |
| Hebrew | שישים ואחת |
| Hindi | इकसठ |
| Hungarian | hatvanegy |
| Icelandic | sextíu og einn |
| Indonesian | enam puluh satu |
| Italian | sessantuno |
| Japanese | 六十一 |
| Korean | 육십일 |
| Latvian | sešdesmit viens |
| Lithuanian | šešiasdešimt vienas |
| Norwegian | sekstién |
| Persian | شصت و یک |
| Polish | sześćdziesiąt jeden |
| Portuguese | sessenta e um |
| Romanian | şasezeci şi unu |
| Russian | шестьдесят один |
| Serbian | шездесет и један |
| Slovak | šesťdesiatjeden |
| Slovene | šestdeset ena |
| Spanish | sesenta y uno |
| Swahili | sitini na moja |
| Swedish | sextioen |
| Thai | หกสิบเอ็ด |
| Turkish | altmış bir |
| Ukrainian | шістдесят один |
| Vietnamese | sáu mươi mốt |
Calculation was done in 0.0139110088 seconds
| Number 61 reversed | 16 |
| ASCII Code | 61 | = |
| Unicode Character | U+003D | = |
| Unix Timestamp | Thu, 01 Jan 1970 00:01:01 +0000 |
Calculation was done in 0.0000309944 seconds
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