51522521024 has 56 divisors (see below), whose sum is σ = 113901382560. Its totient is φ = 22959627264.

The previous prime is 51522521023. The next prime is 51522521033. The reversal of 51522521024 is 42012522515.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51522521023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1043564 + ... + 1091819.

It is an arithmetic number, because the mean of its divisors is an integer number (2033953260).

Almost surely, 2^51522521024 is an apocalyptic number.

It is an amenable number.

51522521024 is an abundant number, since it is smaller than the sum of its proper divisors (62378861536).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51522521024 is a wasteful number, since it uses less digits than its factorization.

51522521024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2135437 (or 2135427 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 29.

The spelling of 51522521024 in words is "fifty-one billion, five hundred twenty-two million, five hundred twenty-one thousand, twenty-four".