556426431 has 12 divisors (see below), whose sum is σ = 876793320. Its totient is φ = 337228080.

The previous prime is 556426427. The next prime is 556426433. The reversal of 556426431 is 134624655.

556426431 is a `hidden beast` number, since 5 + 5 + 6 + 4 + 2 + 643 + 1 = 666.

556426431 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 556426431 - 2² = 556426427 is a prime.

It is a super-2 number, since 2×556426431² = 619220746230795522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (556426433) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2810136 + ... + 2810333.

It is an arithmetic number, because the mean of its divisors is an integer number (73066110).

Almost surely, 2^556426431 is an apocalyptic number.

556426431 is a deficient number, since it is larger than the sum of its proper divisors (320366889).

556426431 is a wasteful number, since it uses less digits than its factorization.

556426431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5620486 (or 5620483 counting only the distinct ones).

The product of its digits is 86400, while the sum is 36.

The square root of 556426431 is about 23588.6928633191. The cubic root of 556426431 is about 822.5000198939.

The spelling of 556426431 in words is "five hundred fifty-six million, four hundred twenty-six thousand, four hundred thirty-one".