72550164 has 12 divisors (see below), whose sum is σ = 169283744. Its totient is φ = 24183384.

The previous prime is 72550157. The next prime is 72550183. The reversal of 72550164 is 46105527.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3022912 + ... + 3022935.

Almost surely, 2^72550164 is an apocalyptic number.

It is an amenable number.

72550164 is an abundant number, since it is smaller than the sum of its proper divisors (96733580).

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

72550164 is a wasteful number, since it uses less digits than its factorization.

72550164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6045854 (or 6045852 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 30.

The square root of 72550164 is about 8517.6384050980. The cubic root of 72550164 is about 417.0736949155.

The spelling of 72550164 in words is "seventy-two million, five hundred fifty thousand, one hundred sixty-four".