56505157155057 has 16 divisors (see below), whose sum is σ = 81135976140800. Its totient is φ = 34772247603072.

The previous prime is 56505157155043. The next prime is 56505157155077. The reversal of 56505157155057 is 75055175150565.

56505157155057 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 56505157155057 - 2¹⁵ = 56505157122289 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 56505157154988 and 56505157155006.

It is not an unprimeable number, because it can be changed into a prime (56505157155077) 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 15 ways as a sum of consecutive naturals, for example, 5812368 + ... + 12115854.

It is an arithmetic number, because the mean of its divisors is an integer number (5070998508800).

Almost surely, 2^{56505157155057} is an apocalyptic number.

It is an amenable number.

56505157155057 is a deficient number, since it is larger than the sum of its proper divisors (24630818985743).

56505157155057 is a wasteful number, since it uses less digits than its factorization.

56505157155057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6533352.

The product of its (nonzero) digits is 22968750, while the sum is 57.

The spelling of 56505157155057 in words is "fifty-six trillion, five hundred five billion, one hundred fifty-seven million, one hundred fifty-five thousand, fifty-seven".