557663831 has 4 divisors (see below), whose sum is σ = 560057472. Its totient is φ = 555270192.

The previous prime is 557663807. The next prime is 557663833. The reversal of 557663831 is 138366755.

557663831 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-557663831 is a prime.

It is a super-2 number, since 2×557663831² = 621977896811193122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (557663833) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1196471 + ... + 1196936.

It is an arithmetic number, because the mean of its divisors is an integer number (140014368).

Almost surely, 2^557663831 is an apocalyptic number.

557663831 is a deficient number, since it is larger than the sum of its proper divisors (2393641).

557663831 is a wasteful number, since it uses less digits than its factorization.

557663831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2393640.

The product of its digits is 453600, while the sum is 44.

The square root of 557663831 is about 23614.9069657282. The cubic root of 557663831 is about 823.1092696554.

The spelling of 557663831 in words is "five hundred fifty-seven million, six hundred sixty-three thousand, eight hundred thirty-one".