51551510052 has 48 divisors (see below), whose sum is σ = 137499797120. Its totient is φ = 14725884672.

The previous prime is 51551510051. The next prime is 51551510057. The reversal of 51551510052 is 25001515515.

It is not an unprimeable number, because it can be changed into a prime (51551510051) 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, 349848 + ... + 474864.

Almost surely, 2^51551510052 is an apocalyptic number.

It is an amenable number.

51551510052 is an abundant number, since it is smaller than the sum of its proper divisors (85948287068).

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

51551510052 is a wasteful number, since it uses less digits than its factorization.

51551510052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129940 (or 129938 counting only the distinct ones).

The product of its (nonzero) digits is 6250, while the sum is 30.

The spelling of 51551510052 in words is "fifty-one billion, five hundred fifty-one million, five hundred ten thousand, fifty-two".