57564740 has 24 divisors (see below), whose sum is σ = 121029720. Its totient is φ = 22998528.

The previous prime is 57564713. The next prime is 57564757. The reversal of 57564740 is 4746575.

It can be written as a sum of positive squares in 4 ways, for example, as 3865156 + 53699584 = 1966^2 + 7328^2 .

It is a junction number, because it is equal to n+sod(n) for n = 57564694 and 57564703.

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, 28814 + ... + 30746.

It is an arithmetic number, because the mean of its divisors is an integer number (5042905).

Almost surely, 2^57564740 is an apocalyptic number.

It is an amenable number.

57564740 is an abundant number, since it is smaller than the sum of its proper divisors (63464980).

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

57564740 is a wasteful number, since it uses less digits than its factorization.

57564740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3431 (or 3429 counting only the distinct ones).

The product of its (nonzero) digits is 117600, while the sum is 38.

The square root of 57564740 is about 7587.1430723297. The cubic root of 57564740 is about 386.1169341557.

The spelling of 57564740 in words is "fifty-seven million, five hundred sixty-four thousand, seven hundred forty".