556404655 has 16 divisors (see below), whose sum is σ = 674954784. Its totient is φ = 440294400.

The previous prime is 556404619. The next prime is 556404689.

556404655 is nontrivially palindromic in base 10.

556404655 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 556404655 - 2⁹ = 556404143 is a prime.

It is a super-2 number, since 2×556404655² = 619172280211338050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 528880 + ... + 529930.

It is an arithmetic number, because the mean of its divisors is an integer number (42184674).

Almost surely, 2^556404655 is an apocalyptic number.

556404655 is a deficient number, since it is larger than the sum of its proper divisors (118550129).

556404655 is a wasteful number, since it uses less digits than its factorization.

556404655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2106.

The product of its (nonzero) digits is 360000, while the sum is 40.

The square root of 556404655 is about 23588.2312817218. The cubic root of 556404655 is about 822.4892901172.

The spelling of 556404655 in words is "five hundred fifty-six million, four hundred four thousand, six hundred fifty-five".