51022501504 has 128 divisors (see below), whose sum is σ = 116010720000. Its totient is φ = 22157660160.

The previous prime is 51022501501. The next prime is 51022501507. The reversal of 51022501504 is 40510522015.

It is an interprime number because it is at equal distance from previous prime (51022501501) and next prime (51022501507).

It is a tau number, because it is divible by the number of its divisors (128).

It is not an unprimeable number, because it can be changed into a prime (51022501501) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4705369 + ... + 4716199.

It is an arithmetic number, because the mean of its divisors is an integer number (906333750).

Almost surely, 2^51022501504 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51022501504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58005360000).

51022501504 is an abundant number, since it is smaller than the sum of its proper divisors (64988218496).

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

51022501504 is a wasteful number, since it uses less digits than its factorization.

51022501504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11026 (or 11014 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 25.

The spelling of 51022501504 in words is "fifty-one billion, twenty-two million, five hundred one thousand, five hundred four".