56551767756 has 24 divisors (see below), whose sum is σ = 143949954624. Its totient is φ = 17136899280.

The previous prime is 56551767749. The next prime is 56551767757. The reversal of 56551767756 is 65776715565.

It is a happy number.

It is a super-2 number, since 2×56551767756² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 56551767756.

It is not an unprimeable number, because it can be changed into a prime (56551767757) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 214211110 + ... + 214211373.

It is an arithmetic number, because the mean of its divisors is an integer number (5997914776).

Almost surely, 2^56551767756 is an apocalyptic number.

It is an amenable number.

56551767756 is an abundant number, since it is smaller than the sum of its proper divisors (87398186868).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

56551767756 is a wasteful number, since it uses less digits than its factorization.

56551767756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 428422501 (or 428422499 counting only the distinct ones).

The product of its digits is 46305000, while the sum is 60.

The spelling of 56551767756 in words is "fifty-six billion, five hundred fifty-one million, seven hundred sixty-seven thousand, seven hundred fifty-six".