556831867 has 2 divisors, whose sum is σ = 556831868. Its totient is φ = 556831866.

The previous prime is 556831859. The next prime is 556831901. The reversal of 556831867 is 768138655.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 556831867 - 2³ = 556831859 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 556831867.

It is not a weakly prime, because it can be changed into another prime (556831367) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 278415933 + 278415934.

It is an arithmetic number, because the mean of its divisors is an integer number (278415934).

Almost surely, 2^556831867 is an apocalyptic number.

556831867 is a deficient number, since it is larger than the sum of its proper divisors (1).

556831867 is an equidigital number, since it uses as much as digits as its factorization.

556831867 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1209600, while the sum is 49.

The square root of 556831867 is about 23597.2851616452. The cubic root of 556831867 is about 822.6997409103.

The spelling of 556831867 in words is "five hundred fifty-six million, eight hundred thirty-one thousand, eight hundred sixty-seven".