57515228 has 12 divisors (see below), whose sum is σ = 100716000. Its totient is φ = 28739232.

The previous prime is 57515221. The next prime is 57515273. The reversal of 57515228 is 82251575.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57515221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4400 + ... + 11592.

It is an arithmetic number, because the mean of its divisors is an integer number (8393000).

Almost surely, 2^57515228 is an apocalyptic number.

It is an amenable number.

57515228 is a deficient number, since it is larger than the sum of its proper divisors (43200772).

57515228 is a wasteful number, since it uses less digits than its factorization.

57515228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9196 (or 9194 counting only the distinct ones).

The product of its digits is 28000, while the sum is 35.

The square root of 57515228 is about 7583.8794821648. The cubic root of 57515228 is about 386.0062014091.

The spelling of 57515228 in words is "fifty-seven million, five hundred fifteen thousand, two hundred twenty-eight".