557626923 has 24 divisors (see below), whose sum is σ = 954623488. Its totient is φ = 318642984.

The previous prime is 557626903. The next prime is 557626931. The reversal of 557626923 is 329626755.

557626923 is a `hidden beast` number, since 557 + 6 + 2 + 6 + 92 + 3 = 666.

557626923 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 557626923 - 2²² = 553432619 is a prime.

It is not an unprimeable number, because it can be changed into a prime (557626903) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 162211 + ... + 165612.

Almost surely, 2^557626923 is an apocalyptic number.

557626923 is a deficient number, since it is larger than the sum of its proper divisors (396996565).

557626923 is an equidigital number, since it uses as much as digits as its factorization.

557626923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 327845 (or 327833 counting only the distinct ones).

The product of its digits is 680400, while the sum is 45.

The square root of 557626923 is about 23614.1254972527. The cubic root of 557626923 is about 823.0911105749.

The spelling of 557626923 in words is "five hundred fifty-seven million, six hundred twenty-six thousand, nine hundred twenty-three".