56157053257 has 4 divisors (see below), whose sum is σ = 57968571136. Its totient is φ = 54345535380.

The previous prime is 56157053177. The next prime is 56157053311. The reversal of 56157053257 is 75235075165.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 56157053257 - 2⁷ = 56157053129 is a prime.

It is a super-2 number, since 2×56157053257² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56157056257) 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, 905758893 + ... + 905758954.

It is an arithmetic number, because the mean of its divisors is an integer number (14492142784).

Almost surely, 2^56157053257 is an apocalyptic number.

It is an amenable number.

56157053257 is a deficient number, since it is larger than the sum of its proper divisors (1811517879).

56157053257 is a wasteful number, since it uses less digits than its factorization.

56157053257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1811517878.

The product of its (nonzero) digits is 1102500, while the sum is 46.

The spelling of 56157053257 in words is "fifty-six billion, one hundred fifty-seven million, fifty-three thousand, two hundred fifty-seven".