57122440 has 32 divisors (see below), whose sum is σ = 128819160. Its totient is φ = 22796800.

The previous prime is 57122383. The next prime is 57122453. The reversal of 57122440 is 4422175.

It can be written as a sum of positive squares in 4 ways, for example, as 34597924 + 22524516 = 5882^2 + 4746^2 .

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, 19470 + ... + 22210.

Almost surely, 2^57122440 is an apocalyptic number.

It is an amenable number.

57122440 is an abundant number, since it is smaller than the sum of its proper divisors (71696720).

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

57122440 is a wasteful number, since it uses less digits than its factorization.

57122440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3273 (or 3269 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 25.

The square root of 57122440 is about 7557.9388724705. The cubic root of 57122440 is about 385.1254777375.

The spelling of 57122440 in words is "fifty-seven million, one hundred twenty-two thousand, four hundred forty".