56511051671 has 4 divisors (see below), whose sum is σ = 56721130200. Its totient is φ = 56300973144.

The previous prime is 56511051643. The next prime is 56511051673. The reversal of 56511051671 is 17615011565.

56511051671 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 56511051671 - 2⁶ = 56511051607 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56511051673) 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, 105038861 + ... + 105039398.

It is an arithmetic number, because the mean of its divisors is an integer number (14180282550).

Almost surely, 2^56511051671 is an apocalyptic number.

56511051671 is a deficient number, since it is larger than the sum of its proper divisors (210078529).

56511051671 is a wasteful number, since it uses less digits than its factorization.

56511051671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210078528.

The product of its (nonzero) digits is 31500, while the sum is 38.

The spelling of 56511051671 in words is "fifty-six billion, five hundred eleven million, fifty-one thousand, six hundred seventy-one".