Names of 2161
| Nominal | 2161 |
| Cardinal | two thousand one hundred sixty-one |
| Ordinal | 2,161st |
| This number as US currency | two thousand one hundred sixty-one dollars |
| Is 2161 an odd number? | 2161 is an odd number |
| Is 2161 an even number? | 2161 is NOT an even number |
| Is 2161 a palindrome? | 2161 is NOT a palindrome number |
| Is 2161 a triangle number? | 2161 is NOT a triangle number |
2161 in other Bases
| Base 2 (Binary) | 1000011100012 |
| Base 3 (Ternary) | 22220013 |
| Base 4 (Quaternary) | 2013014 |
| Base 5 (Quinary) | 321215 |
| Base 6 (Senary) | 140016 |
| Base 8 (Octal) | 41618 |
| Base 12 (Duodecimal) | 130112 |
| Base 16 (Hexadecimal) | 87116 |
| Base 20 (Vigesimal) | 58120 |
Primes and Factors tests for 2161
| Is 2161 a Prime Number? | 2161 is a prime |
| Is 2161 a perfect number? | 2161 is NOT a perfect number |
| Is 2161 a Mersenne Prime? | 2161 is NOT a Mersenne prime |
| Is 2161 a Fermat Prime? | 2161 is NOT a Fermat prime |
| Is 2161 a Fibonacci Prime? | 2161 is NOT a Fibonacci prime |
| Is 2161 a Partition Prime? | 2161 is NOT a Partition prime |
| Is 2161 a Pell Prime? | 2161 is NOT a Pell prime |
| Prime Factors | Prime factors of 2161 |
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2161 in other Numerals
| 2161 in Roman Numeral | MMCLXI |
| 2161 in Chinese Numeral | 貳仟壹佰陸拾壹 |
| 2161 in Egyptian Numeral | 𓆽𓍢𓎋𓏺 |
| 2161 in Babylonian Numeral |   |
Roots and stuff for 2161
| Is 2161 a square number? | 2161 is NOT a square number |
| Is 2161 a cube number? | 2161 is NOT a cube number |
| Square root of the number 2161 | 46.486557196678 |
| Cube root of the number 2161 | 12.928602679359 |
Recreational math for 2161
| Number 2161 reversed | 1612 |
| Sum of the digits | 10 |
| No of digits | 4 |