556912831 has 2 divisors, whose sum is σ = 556912832. Its totient is φ = 556912830.

The previous prime is 556912753. The next prime is 556912847. The reversal of 556912831 is 138219655.

556912831 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 556912831 - 2¹³ = 556904639 is a prime.

It is a super-2 number, since 2×556912831² = 620303802664869122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (556912931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 278456415 + 278456416.

It is an arithmetic number, because the mean of its divisors is an integer number (278456416).

Almost surely, 2^556912831 is an apocalyptic number.

556912831 is a deficient number, since it is larger than the sum of its proper divisors (1).

556912831 is an equidigital number, since it uses as much as digits as its factorization.

556912831 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 64800, while the sum is 40.

The square root of 556912831 is about 23599.0006356201. Note that the first 3 decimals coincide. The cubic root of 556912831 is about 822.7396128104.

The spelling of 556912831 in words is "five hundred fifty-six million, nine hundred twelve thousand, eight hundred thirty-one".