51520553025 has 12 divisors (see below), whose sum is σ = 85180647792. Its totient is φ = 27477628240.

The previous prime is 51520553017. The next prime is 51520553041. The reversal of 51520553025 is 52035502515.

It is not a de Polignac number, because 51520553025 - 2³ = 51520553017 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 343470279 + ... + 343470428.

It is an arithmetic number, because the mean of its divisors is an integer number (7098387316).

Almost surely, 2^51520553025 is an apocalyptic number.

It is an amenable number.

51520553025 is a deficient number, since it is larger than the sum of its proper divisors (33660094767).

51520553025 is a wasteful number, since it uses less digits than its factorization.

51520553025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 686940720 (or 686940715 counting only the distinct ones).

The product of its (nonzero) digits is 37500, while the sum is 33.

The spelling of 51520553025 in words is "fifty-one billion, five hundred twenty million, five hundred fifty-three thousand, twenty-five".