556478885 has 12 divisors (see below), whose sum is σ = 677917548. Its totient is φ = 438520896.

The previous prime is 556478869. The next prime is 556478887. The reversal of 556478885 is 588874655.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 409414756 + 147064129 = 20234^2 + 12127^2 .

It is not a de Polignac number, because 556478885 - 2⁴ = 556478869 is a prime.

It is a Smith number, since the sum of its digits (56) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 556478885.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (556478887) 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 in 11 ways as a sum of consecutive naturals, for example, 10049 + ... + 34841.

It is an arithmetic number, because the mean of its divisors is an integer number (56493129).

Almost surely, 2^556478885 is an apocalyptic number.

It is an amenable number.

556478885 is a deficient number, since it is larger than the sum of its proper divisors (121438663).

556478885 is an equidigital number, since it uses as much as digits as its factorization.

556478885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24932 (or 24865 counting only the distinct ones).

The product of its digits is 10752000, while the sum is 56.

The square root of 556478885 is about 23589.8046833796. The cubic root of 556478885 is about 822.5258646166.

The spelling of 556478885 in words is "five hundred fifty-six million, four hundred seventy-eight thousand, eight hundred eighty-five".