56551827157 has 32 divisors (see below), whose sum is σ = 66766017024. Its totient is φ = 46887724800.

The previous prime is 56551827151. The next prime is 56551827169. The reversal of 56551827157 is 75172815565.

It is not a de Polignac number, because 56551827157 - 2³ = 56551827149 is a prime.

It is a Smith number, since the sum of its digits (52) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56551827151) 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 31 ways as a sum of consecutive naturals, for example, 47884107 + ... + 47885287.

It is an arithmetic number, because the mean of its divisors is an integer number (2086438032).

Almost surely, 2^56551827157 is an apocalyptic number.

It is an amenable number.

56551827157 is a deficient number, since it is larger than the sum of its proper divisors (10214189867).

56551827157 is a wasteful number, since it uses less digits than its factorization.

56551827157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2149.

The product of its digits is 2940000, while the sum is 52.

The spelling of 56551827157 in words is "fifty-six billion, five hundred fifty-one million, eight hundred twenty-seven thousand, one hundred fifty-seven".