55565456555 has 16 divisors (see below), whose sum is σ = 76629784320. Its totient is φ = 37889162592.

The previous prime is 55565456519. The next prime is 55565456561.

55565456555 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 55565456555 - 2¹⁰ = 55565455531 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55565456555.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4428329 + ... + 4440858.

It is an arithmetic number, because the mean of its divisors is an integer number (4789361520).

Almost surely, 2^55565456555 is an apocalyptic number.

55565456555 is a deficient number, since it is larger than the sum of its proper divisors (21064327765).

55565456555 is a wasteful number, since it uses less digits than its factorization.

55565456555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8869378.

The product of its digits is 56250000, while the sum is 56.

The spelling of 55565456555 in words is "fifty-five billion, five hundred sixty-five million, four hundred fifty-six thousand, five hundred fifty-five".