172165168 has 40 divisors (see below), whose sum is σ = 381859488. Its totient is φ = 73661952.

The previous prime is 172165159. The next prime is 172165187. The reversal of 172165168 is 861561271.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 105930 + ... + 107542.

Almost surely, 2^172165168 is an apocalyptic number.

It is an amenable number.

172165168 is an abundant number, since it is smaller than the sum of its proper divisors (209694320).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

172165168 is a wasteful number, since it uses less digits than its factorization.

172165168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2581 (or 2575 counting only the distinct ones).

The product of its digits is 20160, while the sum is 37.

The square root of 172165168 is about 13121.1725085832. The cubic root of 172165168 is about 556.3077329632.

The spelling of 172165168 in words is "one hundred seventy-two million, one hundred sixty-five thousand, one hundred sixty-eight".