57503720 has 32 divisors (see below), whose sum is σ = 129616200. Its totient is φ = 22960128.

The previous prime is 57503711. The next prime is 57503737. The reversal of 57503720 is 2730575.

It can be written as a sum of positive squares in 4 ways, for example, as 54140164 + 3363556 = 7358^2 + 1834^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31472 + ... + 33248.

Almost surely, 2^57503720 is an apocalyptic number.

It is an amenable number.

57503720 is an abundant number, since it is smaller than the sum of its proper divisors (72112480).

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

57503720 is a wasteful number, since it uses less digits than its factorization.

57503720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2597 (or 2593 counting only the distinct ones).

The product of its (nonzero) digits is 7350, while the sum is 29.

The square root of 57503720 is about 7583.1207296205. The cubic root of 57503720 is about 385.9804548615.

The spelling of 57503720 in words is "fifty-seven million, five hundred three thousand, seven hundred twenty".