556505879 has 4 divisors (see below), whose sum is σ = 556560576. Its totient is φ = 556451184.

The previous prime is 556505869. The next prime is 556505921. The reversal of 556505879 is 978505655.

556505879 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-556505879 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (556505849) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7079 + ... + 34104.

It is an arithmetic number, because the mean of its divisors is an integer number (139140144).

Almost surely, 2^556505879 is an apocalyptic number.

556505879 is a deficient number, since it is larger than the sum of its proper divisors (54697).

556505879 is a wasteful number, since it uses less digits than its factorization.

556505879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54696.

The product of its (nonzero) digits is 1890000, while the sum is 50.

The square root of 556505879 is about 23590.3768303942. The cubic root of 556505879 is about 822.5391642552.

The spelling of 556505879 in words is "five hundred fifty-six million, five hundred five thousand, eight hundred seventy-nine".