51553852791 has 32 divisors (see below), whose sum is σ = 79194931200. Its totient is φ = 29220803040.

The previous prime is 51553852789. The next prime is 51553852799. The reversal of 51553852791 is 19725835515.

51553852791 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 51553852791 - 2¹ = 51553852789 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51553852799) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10228450 + ... + 10233488.

It is an arithmetic number, because the mean of its divisors is an integer number (2474841600).

Almost surely, 2^51553852791 is an apocalyptic number.

51553852791 is a deficient number, since it is larger than the sum of its proper divisors (27641078409).

51553852791 is a wasteful number, since it uses less digits than its factorization.

51553852791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8899.

The product of its digits is 1890000, while the sum is 51.

The spelling of 51553852791 in words is "fifty-one billion, five hundred fifty-three million, eight hundred fifty-two thousand, seven hundred ninety-one".