51056560571 has 4 divisors (see below), whose sum is σ = 51080725752. Its totient is φ = 51032395392.

The previous prime is 51056560531. The next prime is 51056560627. The reversal of 51056560571 is 17506565015.

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 51056560571 - 2⁶ = 51056560507 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51056560531) 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, 12079421 + ... + 12083646.

It is an arithmetic number, because the mean of its divisors is an integer number (12770181438).

Almost surely, 2^51056560571 is an apocalyptic number.

51056560571 is a deficient number, since it is larger than the sum of its proper divisors (24165181).

51056560571 is a wasteful number, since it uses less digits than its factorization.

51056560571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24165180.

The product of its (nonzero) digits is 157500, while the sum is 41.

The spelling of 51056560571 in words is "fifty-one billion, fifty-six million, five hundred sixty thousand, five hundred seventy-one".