57305172 has 12 divisors (see below), whose sum is σ = 133712096. Its totient is φ = 19101720.

The previous prime is 57305161. The next prime is 57305191. The reversal of 57305172 is 27150375.

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, 2387704 + ... + 2387727.

Almost surely, 2^57305172 is an apocalyptic number.

It is an amenable number.

57305172 is an abundant number, since it is smaller than the sum of its proper divisors (76406924).

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

57305172 is a wasteful number, since it uses less digits than its factorization.

57305172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4775438 (or 4775436 counting only the distinct ones).

The product of its (nonzero) digits is 7350, while the sum is 30.

The square root of 57305172 is about 7570.0179656326. The cubic root of 57305172 is about 385.5357067126.

The spelling of 57305172 in words is "fifty-seven million, three hundred five thousand, one hundred seventy-two".