57242172 has 48 divisors (see below), whose sum is σ = 148811040. Its totient is φ = 17004288.

The previous prime is 57242083. The next prime is 57242203. The reversal of 57242172 is 27124275.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1803 + ... + 10850.

It is an arithmetic number, because the mean of its divisors is an integer number (3100230).

Almost surely, 2^57242172 is an apocalyptic number.

57242172 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

57242172 is an abundant number, since it is smaller than the sum of its proper divisors (91568868).

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

57242172 is a wasteful number, since it uses less digits than its factorization.

57242172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12702 (or 12700 counting only the distinct ones).

The product of its digits is 7840, while the sum is 30.

The square root of 57242172 is about 7565.8556687264. The cubic root of 57242172 is about 385.3943718502.

The spelling of 57242172 in words is "fifty-seven million, two hundred forty-two thousand, one hundred seventy-two".