57242272 has 24 divisors (see below), whose sum is σ = 114609600. Its totient is φ = 28135104.

The previous prime is 57242249. The next prime is 57242303. The reversal of 57242272 is 27224275.

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, 13272 + ... + 17047.

It is an arithmetic number, because the mean of its divisors is an integer number (4775400).

Almost surely, 2^57242272 is an apocalyptic number.

It is an amenable number.

57242272 is an abundant number, since it is smaller than the sum of its proper divisors (57367328).

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

57242272 is a wasteful number, since it uses less digits than its factorization.

57242272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30388 (or 30380 counting only the distinct ones).

The product of its digits is 15680, while the sum is 31.

The square root of 57242272 is about 7565.8622773614. The cubic root of 57242272 is about 385.3945962734.

The spelling of 57242272 in words is "fifty-seven million, two hundred forty-two thousand, two hundred seventy-two".