159165 has 24 divisors (see below), whose sum is σ = 288288. Its totient is φ = 84240.

The previous prime is 159161. The next prime is 159167. The reversal of 159165 is 561951.

It is not a de Polignac number, because 159165 - 2² = 159161 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (159161) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1150 + ... + 1280.

It is an arithmetic number, because the mean of its divisors is an integer number (12012).

2¹⁵⁹¹⁶⁵ is an apocalyptic number.

159165 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

159165 is a deficient number, since it is larger than the sum of its proper divisors (129123).

159165 is an equidigital number, since it uses as much as digits as its factorization.

159165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151 (or 139 counting only the distinct ones).

The product of its digits is 1350, while the sum is 27.

The square root of 159165 is about 398.9548846674. The cubic root of 159165 is about 54.1937484563.

It can be divided in two parts, 159 and 165, that added together give a square (324 = 18²).

The spelling of 159165 in words is "one hundred fifty-nine thousand, one hundred sixty-five".