51885522571 has 4 divisors (see below), whose sum is σ = 54937612152. Its totient is φ = 48833432992.

The previous prime is 51885522517. The next prime is 51885522589. The reversal of 51885522571 is 17522558815.

51885522571 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 51885522571 - 2⁷ = 51885522443 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51885522971) 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, 1526044765 + ... + 1526044798.

It is an arithmetic number, because the mean of its divisors is an integer number (13734403038).

Almost surely, 2^51885522571 is an apocalyptic number.

51885522571 is a deficient number, since it is larger than the sum of its proper divisors (3052089581).

51885522571 is a wasteful number, since it uses less digits than its factorization.

51885522571 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3052089580.

The product of its digits is 1120000, while the sum is 49.

The spelling of 51885522571 in words is "fifty-one billion, eight hundred eighty-five million, five hundred twenty-two thousand, five hundred seventy-one".