165500165 has 16 divisors (see below), whose sum is σ = 215800320. Its totient is φ = 121383360.

The previous prime is 165500161. The next prime is 165500183. The reversal of 165500165 is 561005561.

165500165 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 165500165 - 2² = 165500161 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165500161) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25154 + ... + 31043.

It is an arithmetic number, because the mean of its divisors is an integer number (13487520).

Almost surely, 2^165500165 is an apocalyptic number.

It is an amenable number.

165500165 is a deficient number, since it is larger than the sum of its proper divisors (50300155).

165500165 is a wasteful number, since it uses less digits than its factorization.

165500165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56252.

The product of its (nonzero) digits is 4500, while the sum is 29.

The square root of 165500165 is about 12864.6867431741. The cubic root of 165500165 is about 549.0342998887.

The spelling of 165500165 in words is "one hundred sixty-five million, five hundred thousand, one hundred sixty-five".