164172504 has 32 divisors (see below), whose sum is σ = 419166720. Its totient is φ = 53559456.

The previous prime is 164172473. The next prime is 164172517. The reversal of 164172504 is 405271461.

It is a super-2 number, since 2×164172504² = 53905222139260032, which contains 22 as substring.

It is a congruent number.

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, 71644 + ... + 73899.

It is an arithmetic number, because the mean of its divisors is an integer number (13098960).

Almost surely, 2^164172504 is an apocalyptic number.

It is an amenable number.

164172504 is an abundant number, since it is smaller than the sum of its proper divisors (254994216).

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

164172504 is a wasteful number, since it uses less digits than its factorization.

164172504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145599 (or 145595 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 164172504 is about 12812.9818543538. The cubic root of 164172504 is about 547.5622180705.

The spelling of 164172504 in words is "one hundred sixty-four million, one hundred seventy-two thousand, five hundred four".