56556554263 has 4 divisors (see below), whose sum is σ = 61698059208. Its totient is φ = 51415049320.

The previous prime is 56556554233. The next prime is 56556554293. The reversal of 56556554263 is 36245565565.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (56556554233) and next prime (56556554293).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56556554263 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 56556554263.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56556554233) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2570752456 + ... + 2570752477.

It is an arithmetic number, because the mean of its divisors is an integer number (15424514802).

Almost surely, 2^56556554263 is an apocalyptic number.

56556554263 is a deficient number, since it is larger than the sum of its proper divisors (5141504945).

56556554263 is a wasteful number, since it uses less digits than its factorization.

56556554263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5141504944.

The product of its digits is 16200000, while the sum is 52.

The spelling of 56556554263 in words is "fifty-six billion, five hundred fifty-six million, five hundred fifty-four thousand, two hundred sixty-three".