165272172 has 24 divisors (see below), whose sum is σ = 415299696. Its totient is φ = 50852928.

The previous prime is 165272171. The next prime is 165272201. The reversal of 165272172 is 271272561.

It is not an unprimeable number, because it can be changed into a prime (165272171) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 529563 + ... + 529874.

It is an arithmetic number, because the mean of its divisors is an integer number (17304154).

Almost surely, 2^165272172 is an apocalyptic number.

165272172 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

165272172 is an abundant number, since it is smaller than the sum of its proper divisors (250027524).

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

165272172 is a wasteful number, since it uses less digits than its factorization.

165272172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1059457 (or 1059455 counting only the distinct ones).

The product of its digits is 11760, while the sum is 33.

The square root of 165272172 is about 12855.8224941075. The cubic root of 165272172 is about 548.7820675078.

The spelling of 165272172 in words is "one hundred sixty-five million, two hundred seventy-two thousand, one hundred seventy-two".