57042972 has 72 divisors (see below), whose sum is σ = 168840672. Its totient is φ = 15897600.

The previous prime is 57042919. The next prime is 57043001. The reversal of 57042972 is 27924075.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7572 + ... + 13092.

Almost surely, 2^57042972 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 57042972, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84420336).

57042972 is an abundant number, since it is smaller than the sum of its proper divisors (111797700).

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

57042972 is a wasteful number, since it uses less digits than its factorization.

57042972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5579 (or 5574 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 36.

The square root of 57042972 is about 7552.6797893198. The cubic root of 57042972 is about 384.9468009925.

The spelling of 57042972 in words is "fifty-seven million, forty-two thousand, nine hundred seventy-two".