Names of 165
| Nominal | 165 |
| Cardinal | one hundred sixty-five |
| Ordinal | 165th |
| This number as US currency | one hundred sixty-five dollars |
| Is 165 an odd number? | 165 is an odd number |
| Is 165 an even number? | 165 is NOT an even number |
| Is 165 a palindrome? | 165 is NOT a palindrome number |
| Is 165 a triangle number? | 165 is NOT a triangle number |
165 in other Bases
| Base 2 (Binary) | 101001012 |
| Base 3 (Ternary) | 200103 |
| Base 4 (Quaternary) | 22114 |
| Base 5 (Quinary) | 11305 |
| Base 6 (Senary) | 4336 |
| Base 8 (Octal) | 2458 |
| Base 12 (Duodecimal) | 11912 |
| Base 16 (Hexadecimal) | A516 |
| Base 20 (Vigesimal) | 8520 |
Primes and Factors tests for 165
| Is 165 a Prime Number? | 165 is NOT a prime |
| Is 165 a perfect number? | 165 is NOT a perfect number |
| Is 165 a Mersenne Prime? | 165 is NOT a Mersenne prime |
| Is 165 a Fermat Prime? | 165 is NOT a Fermat prime |
| Is 165 a Fibonacci Prime? | 165 is NOT a Fibonacci prime |
| Is 165 a Partition Prime? | 165 is NOT a Partition prime |
| Is 165 a Pell Prime? | 165 is NOT a Pell prime |
| Prime Factors | Prime factors of 165 |
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165 in other Numerals
| 165 in Roman Numeral | CLXV |
| 165 in Chinese Numeral | 壹佰陸拾伍 |
| 165 in Egyptian Numeral | 𓍢𓎋𓏾 |
| 165 in Babylonian Numeral |   |
Roots and stuff for 165
| Is 165 a square number? | 165 is NOT a square number |
| Is 165 a cube number? | 165 is NOT a cube number |
| Square root of the number 165 | 12.845232578665 |
| Cube root of the number 165 | 5.4848065524326 |
Recreational math for 165
| Number 165 reversed | 561 |
| Sum of the digits | 12 |
| No of digits | 3 |