557730440 has 32 divisors (see below), whose sum is σ = 1255587480. Its totient is φ = 222968832.

The previous prime is 557730403. The next prime is 557730451. The reversal of 557730440 is 44037755.

It can be written as a sum of positive squares in 4 ways, for example, as 403126084 + 154604356 = 20078^2 + 12434^2 .

It is a super-2 number, since 2×557730440² = 622126487405187200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 557730440.

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, 113474 + ... + 118286.

Almost surely, 2^557730440 is an apocalyptic number.

It is an amenable number.

557730440 is an abundant number, since it is smaller than the sum of its proper divisors (697857040).

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

557730440 is a wasteful number, since it uses less digits than its factorization.

557730440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7721 (or 7717 counting only the distinct ones).

The product of its (nonzero) digits is 58800, while the sum is 35.

The square root of 557730440 is about 23616.3172404166. The cubic root of 557730440 is about 823.1420398773.

The spelling of 557730440 in words is "five hundred fifty-seven million, seven hundred thirty thousand, four hundred forty".