556505555 has 4 divisors (see below), whose sum is σ = 667806672. Its totient is φ = 445204440.

The previous prime is 556505533. The next prime is 556505561. The reversal of 556505555 is 555505655.

556505555 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.

It is not a de Polignac number, because 556505555 - 2¹² = 556501459 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55650551 + ... + 55650560.

It is an arithmetic number, because the mean of its divisors is an integer number (166951668).

Almost surely, 2^556505555 is an apocalyptic number.

556505555 is a deficient number, since it is larger than the sum of its proper divisors (111301117).

556505555 is a wasteful number, since it uses less digits than its factorization.

556505555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111301116.

The product of its (nonzero) digits is 468750, while the sum is 41.

The square root of 556505555 is about 23590.3699631862. The cubic root of 556505555 is about 822.5390046266.

The spelling of 556505555 in words is "five hundred fifty-six million, five hundred five thousand, five hundred fifty-five".