57215070 has 48 divisors (see below), whose sum is σ = 162285552. Its totient is φ = 13870080.

The previous prime is 57215033. The next prime is 57215071. The reversal of 57215070 is 7051275.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57215071) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27907 + ... + 29886.

It is an arithmetic number, because the mean of its divisors is an integer number (3380949).

Almost surely, 2^57215070 is an apocalyptic number.

57215070 is an abundant number, since it is smaller than the sum of its proper divisors (105070482).

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

57215070 is a wasteful number, since it uses less digits than its factorization.

57215070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57817 (or 57814 counting only the distinct ones).

The product of its (nonzero) digits is 2450, while the sum is 27.

The square root of 57215070 is about 7564.0643836498. The cubic root of 57215070 is about 385.3335390366. Note that the first 3 decimals are identical.

The spelling of 57215070 in words is "fifty-seven million, two hundred fifteen thousand, seventy".