556808655 has 16 divisors (see below), whose sum is σ = 959424480. Its totient is φ = 274121088.

The previous prime is 556808521. The next prime is 556808683.

556808655 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 556808655 - 2²⁵ = 523254223 is a prime.

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, 1427520 + ... + 1427909.

It is an arithmetic number, because the mean of its divisors is an integer number (59964030).

Almost surely, 2^556808655 is an apocalyptic number.

556808655 is a deficient number, since it is larger than the sum of its proper divisors (402615825).

556808655 is a wasteful number, since it uses less digits than its factorization.

556808655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2855450.

The product of its (nonzero) digits is 1440000, while the sum is 48.

The square root of 556808655 is about 23596.7933202798. The cubic root of 556808655 is about 822.6883091102.

The spelling of 556808655 in words is "five hundred fifty-six million, eight hundred eight thousand, six hundred fifty-five".