56510055155 has 32 divisors (see below), whose sum is σ = 71302533120. Its totient is φ = 42937799040.

The previous prime is 56510055143. The next prime is 56510055163. The reversal of 56510055155 is 55155001565.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-56510055155 is a prime.

It is a super-2 number, since 2×56510055155² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5966954 + ... + 5976416.

It is an arithmetic number, because the mean of its divisors is an integer number (2228204160).

Almost surely, 2^56510055155 is an apocalyptic number.

56510055155 is a deficient number, since it is larger than the sum of its proper divisors (14792477965).

56510055155 is a wasteful number, since it uses less digits than its factorization.

56510055155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10211.

The product of its (nonzero) digits is 93750, while the sum is 38.

The spelling of 56510055155 in words is "fifty-six billion, five hundred ten million, fifty-five thousand, one hundred fifty-five".