57397130 has 48 divisors (see below), whose sum is σ = 123156936. Its totient is φ = 19192320.

The previous prime is 57397127. The next prime is 57397139. The reversal of 57397130 is 3179375.

It can be written as a sum of positive squares in 4 ways, for example, as 35988001 + 21409129 = 5999^2 + 4627^2 .

It is a Harshad number since it is a multiple of its sum of digits (35).

It is not an unprimeable number, because it can be changed into a prime (57397139) 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, 18662 + ... + 21518.

Almost surely, 2^57397130 is an apocalyptic number.

57397130 is an abundant number, since it is smaller than the sum of its proper divisors (65759806).

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

57397130 is a wasteful number, since it uses less digits than its factorization.

57397130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2919 (or 2912 counting only the distinct ones).

The product of its (nonzero) digits is 19845, while the sum is 35.

The square root of 57397130 is about 7576.0893606134. The cubic root of 57397130 is about 385.7418204264.

The spelling of 57397130 in words is "fifty-seven million, three hundred ninety-seven thousand, one hundred thirty".