56551550500 has 24 divisors (see below), whose sum is σ = 123508587384. Its totient is φ = 22620620000.

The previous prime is 56551550483. The next prime is 56551550501. The reversal of 56551550500 is 505515565.

It can be written as a sum of positive squares in 4 ways, for example, as 13136827456 + 43414723044 = 114616^2 + 208362^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 56551550500.

It is not an unprimeable number, because it can be changed into a prime (56551550501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56551051 + ... + 56552050.

It is an arithmetic number, because the mean of its divisors is an integer number (5146191141).

Almost surely, 2^56551550500 is an apocalyptic number.

56551550500 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

56551550500 is an abundant number, since it is smaller than the sum of its proper divisors (66957036884).

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

56551550500 is a wasteful number, since it uses less digits than its factorization.

56551550500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113103120 (or 113103108 counting only the distinct ones).

The product of its (nonzero) digits is 93750, while the sum is 37.

The spelling of 56551550500 in words is "fifty-six billion, five hundred fifty-one million, five hundred fifty thousand, five hundred".