Names of 2491
| Nominal | 2491 |
| Cardinal | two thousand four hundred ninety-one |
| Ordinal | 2,491st |
| This number as US currency | two thousand four hundred ninety-one dollars |
| Is 2491 an odd number? | 2491 is an odd number |
| Is 2491 an even number? | 2491 is NOT an even number |
| Is 2491 a palindrome? | 2491 is NOT a palindrome number |
| Is 2491 a triangle number? | 2491 is NOT a triangle number |
2491 in other Bases
| Base 2 (Binary) | 1001101110112 |
| Base 3 (Ternary) | 101020213 |
| Base 4 (Quaternary) | 2123234 |
| Base 5 (Quinary) | 344315 |
| Base 6 (Senary) | 153116 |
| Base 8 (Octal) | 46738 |
| Base 12 (Duodecimal) | 153712 |
| Base 16 (Hexadecimal) | 9BB16 |
| Base 20 (Vigesimal) | 64B20 |
Primes and Factors tests for 2491
| Is 2491 a Prime Number? | 2491 is NOT a prime |
| Is 2491 a perfect number? | 2491 is NOT a perfect number |
| Is 2491 a Mersenne Prime? | 2491 is NOT a Mersenne prime |
| Is 2491 a Fermat Prime? | 2491 is NOT a Fermat prime |
| Is 2491 a Fibonacci Prime? | 2491 is NOT a Fibonacci prime |
| Is 2491 a Partition Prime? | 2491 is NOT a Partition prime |
| Is 2491 a Pell Prime? | 2491 is NOT a Pell prime |
| Prime Factors | Prime factors of 2491 |
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2491 in other Numerals
| 2491 in Roman Numeral | MMCDXCI |
| 2491 in Chinese Numeral | 貳仟肆佰玖拾壹 |
| 2491 in Egyptian Numeral | 𓆽𓍥𓎎𓏺 |
| 2491 in Babylonian Numeral |   |
Roots and stuff for 2491
| Is 2491 a square number? | 2491 is NOT a square number |
| Is 2491 a cube number? | 2491 is NOT a cube number |
| Square root of the number 2491 | 49.909918853871 |
| Cube root of the number 2491 | 13.555781994286 |
Recreational math for 2491
| Number 2491 reversed | 1942 |
| Sum of the digits | 16 |
| No of digits | 4 |