56554831171 has 4 divisors (see below), whose sum is σ = 56961700600. Its totient is φ = 56147961744.

The previous prime is 56554831153. The next prime is 56554831217. The reversal of 56554831171 is 17113845565.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56554831171 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56554831111) 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, 203434506 + ... + 203434783.

It is an arithmetic number, because the mean of its divisors is an integer number (14240425150).

Almost surely, 2^56554831171 is an apocalyptic number.

56554831171 is a deficient number, since it is larger than the sum of its proper divisors (406869429).

56554831171 is a wasteful number, since it uses less digits than its factorization.

56554831171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 406869428.

The product of its digits is 504000, while the sum is 46.

The spelling of 56554831171 in words is "fifty-six billion, five hundred fifty-four million, eight hundred thirty-one thousand, one hundred seventy-one".