51539607528 has 16 divisors (see below), whose sum is σ = 128849018880. Its totient is φ = 17179869168.

The previous prime is 51539607521. The next prime is 51539607547. The reversal of 51539607528 is 82570693515.

It is a happy number.

It is a super-2 number, since 2×51539607528² (a number of 22 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (51) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (51539607521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1073741800 + ... + 1073741847.

It is an arithmetic number, because the mean of its divisors is an integer number (8053063680).

Almost surely, 2^51539607528 is an apocalyptic number.

It is an amenable number.

51539607528 is an abundant number, since it is smaller than the sum of its proper divisors (77309411352).

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

51539607528 is a wasteful number, since it uses less digits than its factorization.

51539607528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2147483656 (or 2147483652 counting only the distinct ones).

The product of its (nonzero) digits is 2268000, while the sum is 51.

The spelling of 51539607528 in words is "fifty-one billion, five hundred thirty-nine million, six hundred seven thousand, five hundred twenty-eight".