165
Number 165: Properties, Factors, and Mathematical Facts
Short answer
The number 165 is an odd composite number with 8 positive divisors. Its prime factorization is 3 × 5 × 11. It is also a deficient number, which gives it several notable mathematical relationships.
Is 165 prime?
ClassificationCompositeParityOddDivisor count8AbundanceDeficient
What is the prime factorization of 165?
Prime factorization
3 times 5 times 11
What are the divisors of 165?
Divisor count
8
Divisor sum
288
Proper divisor sum
123
- 1
- 3
- 5
- 11
- 15
- 33
- 55
- 165
How is 165 classified?
How is 165 represented in other numeral systems?
Decimal
165
Binary
10100101
Octal
245
Hexadecimal
Roman
CLXVLearn more →
In words
one hundred sixty five
Roots and powers
Square root
12.845233 Approximate
Cube root
5.484807 Approximate
Nearest lower square
144
Nearest higher square
169
Nearest lower cube
125
Nearest higher cube
216
What are the digit properties of 165?
Which numbers are related to 165?
Why these results are true
- 165 is composite because it has positive divisors other than 1 and itself.
Compare this number
FAQ for 165
- Is 165 prime?
- No
- What is the prime factorization of 165?
- 3 × 5 × 11
- Is 165 a perfect square?
- No
- What is 165 in binary?
- 10100101
- What is 165 in Roman numerals?
- CLXV