165159 has 10 divisors (see below), whose sum is σ = 246840. Its totient is φ = 110052.

The previous prime is 165133. The next prime is 165161. The reversal of 165159 is 951561.

165159 is a `hidden beast` number, since 1 + 651 + 5 + 9 = 666.

It is not a de Polignac number, because 165159 - 2¹³ = 156967 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 (165059) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 939 + ... + 1100.

It is an arithmetic number, because the mean of its divisors is an integer number (24684).

2¹⁶⁵¹⁵⁹ is an apocalyptic number.

165159 is a deficient number, since it is larger than the sum of its proper divisors (81681).

165159 is an equidigital number, since it uses as much as digits as its factorization.

165159 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2051 (or 2042 counting only the distinct ones).

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

The square root of 165159 is about 406.3975885755. The cubic root of 165159 is about 54.8656777318.

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

The spelling of 165159 in words is "one hundred sixty-five thousand, one hundred fifty-nine".