Names of 61981
| Nominal | 61981 |
| Cardinal | sixty-one thousand nine hundred eighty-one |
| Ordinal | 61,981st |
| This number as US currency | sixty-one thousand nine hundred eighty-one dollars |
| Is 61981 an odd number? | 61981 is an odd number |
| Is 61981 an even number? | 61981 is NOT an even number |
| Is 61981 a palindrome? | 61981 is NOT a palindrome number |
| Is 61981 a triangle number? | 61981 is NOT a triangle number |
61981 in other Bases
| Base 2 (Binary) | 11110010000111012 |
| Base 3 (Ternary) | 100110001213 |
| Base 4 (Quaternary) | 330201314 |
| Base 5 (Quinary) | 34404115 |
| Base 6 (Senary) | 11545416 |
| Base 8 (Octal) | 1710358 |
| Base 12 (Duodecimal) | 2BA5112 |
| Base 16 (Hexadecimal) | F21D16 |
| Base 20 (Vigesimal) | 7EJ120 |
Primes and Factors tests for 61981
| Is 61981 a Prime Number? | 61981 is a prime |
| Is 61981 a perfect number? | 61981 is NOT a perfect number |
| Is 61981 a Mersenne Prime? | 61981 is NOT a Mersenne prime |
| Is 61981 a Fermat Prime? | 61981 is NOT a Fermat prime |
| Is 61981 a Fibonacci Prime? | 61981 is NOT a Fibonacci prime |
| Is 61981 a Partition Prime? | 61981 is NOT a Partition prime |
| Is 61981 a Pell Prime? | 61981 is NOT a Pell prime |
| Prime Factors | Prime factors of 61981 |
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61981 in other Numerals
| 61981 in Roman Numeral | LXMCMLXXXI |
| 61981 in Chinese Numeral | 陸萬壹仟玖佰捌拾壹 |
| 61981 in Egyptian Numeral | 𓂲𓆼𓍪𓎍𓏺 |
| 61981 in Babylonian Numeral |    |
Roots and stuff for 61981
| Is 61981 a square number? | 61981 is NOT a square number |
| Is 61981 a cube number? | 61981 is NOT a cube number |
| Square root of the number 61981 | 248.9598361182 |
| Cube root of the number 61981 | 39.57487267618 |
Recreational math for 61981
| Number 61981 reversed | 18916 |
| Sum of the digits | 25 |
| No of digits | 5 |