556912858 has 4 divisors (see below), whose sum is σ = 835369290. Its totient is φ = 278456428.

The previous prime is 556912847. The next prime is 556912879. The reversal of 556912858 is 858219655.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 551451289 + 5461569 = 23483^2 + 2337^2 .

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

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, 139228213 + ... + 139228216.

Almost surely, 2^556912858 is an apocalyptic number.

556912858 is a deficient number, since it is larger than the sum of its proper divisors (278456432).

556912858 is a wasteful number, since it uses less digits than its factorization.

556912858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278456431.

The product of its digits is 864000, while the sum is 49.

The square root of 556912858 is about 23599.0012076783. The cubic root of 556912858 is about 822.7396261063.

The spelling of 556912858 in words is "five hundred fifty-six million, nine hundred twelve thousand, eight hundred fifty-eight".