57313530 has 24 divisors (see below), whose sum is σ = 149015412. Its totient is φ = 15283584.

The previous prime is 57313507. The next prime is 57313537. The reversal of 57313530 is 3531375.

It can be written as a sum of positive squares in 2 ways, for example, as 54420129 + 2893401 = 7377^2 + 1701^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 57313494 and 57313503.

It is not an unprimeable number, because it can be changed into a prime (57313537) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 318319 + ... + 318498.

Almost surely, 2^57313530 is an apocalyptic number.

57313530 is an abundant number, since it is smaller than the sum of its proper divisors (91701882).

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

57313530 is a wasteful number, since it uses less digits than its factorization.

57313530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 636830 (or 636827 counting only the distinct ones).

The product of its (nonzero) digits is 4725, while the sum is 27.

The square root of 57313530 is about 7570.5699917510. The cubic root of 57313530 is about 385.5544493535.

It can be divided in two parts, 5731 and 3530, that added together give a cube (9261 = 21³).

The spelling of 57313530 in words is "fifty-seven million, three hundred thirteen thousand, five hundred thirty".