161
Everything about the number 161 — its names, how to write it in other bases and numeral systems, and what makes it interesting mathematically.
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Names of 161
| Nominal | 161 |
| Cardinal | one hundred sixty-one |
| Ordinal | 161st |
| This number as US currency | one hundred sixty-one dollars |
Properties (and some facts) of 161
| Is 161 an odd number? | 161 is an odd number |
| Is 161 an even number? | 161 is not an even number |
| Is 161 a palindrome? | 161 is a palindrome |
| Is 161 a triangle number? | 161 is not a triangle number |
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161 in other bases
| Base 2 (Binary) | 10100001 |
| Base 3 (Ternary) | 12222 |
| Base 4 (Quaternary) | 2201 |
| Base 5 (Quinary) | 1121 |
| Base 6 (Senary) | 425 |
| Base 8 (Octal) | 241 |
| Base 12 (Duodecimal) | 115 |
| Base 16 (Hexadecimal) | A1 |
| Base 20 (Vigesimal) | 81 |
Primes and factors tests for 161
| Is 161 a prime number? | 161 is not a prime number |
| Is 161 a perfect number? | 161 is not a perfect number |
| Is 161 a Mersenne prime? | 161 is not a Mersenne prime |
| Is 161 a Fermat prime? | 161 is not a Fermat prime |
| Is 161 a Fibonacci prime? | 161 is not a Fibonacci prime |
| Is 161 a partition prime? | 161 is not a partition prime |
| Is 161 a Pell prime? | 161 is not a Pell prime |
| Prime Factors | Prime factors of 161 |
161 in other numeral systems
| 161 in Roman numerals | CLXI |
| 161 in Chinese numerals | 壹佰陸拾壹 |
| 161 in Babylonian numerals |   |
| 161 in Egyptian numerals | 𓍢𓎋𓏺 |
Roots and squares for 161
| Is 161 a square number? | 161 is not a square number |
| Is 161 a cube number? | 161 is not a cube number |
| Square root of 161 | 12.68857754045 |
| Cube root of 161 | 5.4401218254148 |
Recreational math for 161
| Number 161 reversed | 161 |
| Sum of the digits | 8 |
| Number of digits | 3 |
Arithmetic tables for 161
Other pages about 161
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