57221108 has 24 divisors (see below), whose sum is σ = 114879744. Its totient is φ = 24429600.

The previous prime is 57221081. The next prime is 57221183. The reversal of 57221108 is 80112275.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3818 + ... + 11358.

It is an arithmetic number, because the mean of its divisors is an integer number (4786656).

Almost surely, 2^57221108 is an apocalyptic number.

It is an amenable number.

57221108 is an abundant number, since it is smaller than the sum of its proper divisors (57658636).

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

57221108 is a wasteful number, since it uses less digits than its factorization.

57221108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7823 (or 7821 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 26.

The square root of 57221108 is about 7564.4634971689. The cubic root of 57221108 is about 385.3470935196.

The spelling of 57221108 in words is "fifty-seven million, two hundred twenty-one thousand, one hundred eight".