557991232 has 28 divisors (see below), whose sum is σ = 1108067380. Its totient is φ = 278793216.

The previous prime is 557991229. The next prime is 557991241. The reversal of 557991232 is 232199755.

It can be written as a sum of positive squares in 2 ways, for example, as 465523776 + 92467456 = 21576^2 + 9616^2 .

It is a super-2 number, since 2×557991232² = 622708429977755648, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 127708 + ... + 132004.

It is an arithmetic number, because the mean of its divisors is an integer number (39573835).

Almost surely, 2^557991232 is an apocalyptic number.

It is an amenable number.

557991232 is a deficient number, since it is larger than the sum of its proper divisors (550076148).

557991232 is a wasteful number, since it uses less digits than its factorization.

557991232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6338 (or 6328 counting only the distinct ones).

The product of its digits is 170100, while the sum is 43.

The square root of 557991232 is about 23621.8380317875. The cubic root of 557991232 is about 823.2703189364.

The spelling of 557991232 in words is "five hundred fifty-seven million, nine hundred ninety-one thousand, two hundred thirty-two".