51521505002 has 96 divisors (see below), whose sum is σ = 90654076800. Its totient is φ = 21882199680.

The previous prime is 51521504999. The next prime is 51521505041. The reversal of 51521505002 is 20050512515.

It is a super-2 number, since 2×51521505002² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 175841168 + ... + 175841460.

It is an arithmetic number, because the mean of its divisors is an integer number (944313300).

Almost surely, 2^51521505002 is an apocalyptic number.

51521505002 is a deficient number, since it is larger than the sum of its proper divisors (39132571798).

51521505002 is a wasteful number, since it uses less digits than its factorization.

51521505002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 732 (or 721 counting only the distinct ones).

The product of its (nonzero) digits is 2500, while the sum is 26.

The spelling of 51521505002 in words is "fifty-one billion, five hundred twenty-one million, five hundred five thousand, two".