57172032 has 42 divisors (see below), whose sum is σ = 163874958. Its totient is φ = 19057152.

The previous prime is 57172009. The next prime is 57172033. The reversal of 57172032 is 23027175.

It can be written as a sum of positive squares in only one way, i.e., 41679936 + 15492096 = 6456^2 + 3936^2 .

It is a junction number, because it is equal to n+sod(n) for n = 57171987 and 57172005.

It is not an unprimeable number, because it can be changed into a prime (57172033) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 49053 + ... + 50204.

Almost surely, 2^57172032 is an apocalyptic number.

It is an amenable number.

57172032 is an abundant number, since it is smaller than the sum of its proper divisors (106702926).

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

57172032 is a wasteful number, since it uses less digits than its factorization.

57172032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99275 (or 99262 counting only the distinct ones).

The product of its (nonzero) digits is 2940, while the sum is 27.

The square root of 57172032 is about 7561.2189493494. The cubic root of 57172032 is about 385.2368969874.

The spelling of 57172032 in words is "fifty-seven million, one hundred seventy-two thousand, thirty-two".