odd, composite · 165th positive integer
The number 165
165 is an odd composite number. It is the 165th positive integer.
Quick reference
| Prime factorization | 3 × 5 × 11 |
| Divisors | 1, 3, 5, 11, 15, 33, 55, 165 |
| Binary | 10100101 |
| Hexadecimal | 0xA5 |
| Roman numeral | CLXV |
| Digit sum | 12 |
| Properties | odd, composite |
Frequently asked
Is 165 a prime number?
No. 165 is composite. Its prime factorization is 3 × 5 × 11.
What are the factors of 165?
The factors (divisors) of 165 are 1, 3, 5, 11, 15, 33, 55, 165.
What is 165 in binary?
165 in binary is 10100101. In hexadecimal it's A5.
What is 165 as a Roman numeral?
165 in Roman numerals is CLXV.
What's the digit sum of 165?
Adding the digits of 165: 1 + 6 + 5 = 12.