57404520 has 48 divisors (see below), whose sum is σ = 186565860. Its totient is φ = 15307776.

The previous prime is 57404519. The next prime is 57404533. The reversal of 57404520 is 2540475.

It can be written as a sum of positive squares in 2 ways, for example, as 52969284 + 4435236 = 7278^2 + 2106^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 79369 + ... + 80088.

Almost surely, 2^57404520 is an apocalyptic number.

It is an amenable number.

57404520 is an abundant number, since it is smaller than the sum of its proper divisors (129161340).

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

57404520 is a wasteful number, since it uses less digits than its factorization.

57404520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159474 (or 159467 counting only the distinct ones).

The product of its (nonzero) digits is 5600, while the sum is 27.

The square root of 57404520 is about 7576.5770635558. The cubic root of 57404520 is about 385.7583747368.

Adding to 57404520 its reverse (2540475), we get a palindrome (59944995).

The spelling of 57404520 in words is "fifty-seven million, four hundred four thousand, five hundred twenty".