51003021512 has 16 divisors (see below), whose sum is σ = 101255998860. Its totient is φ = 24001421824.

The previous prime is 51003021463. The next prime is 51003021521. The reversal of 51003021512 is 21512030015.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 46817707876 + 4185313636 = 216374^2 + 64694^2 .

It is a super-2 number, since 2×51003021512² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 187510973 + ... + 187511244.

Almost surely, 2^51003021512 is an apocalyptic number.

It is an amenable number.

51003021512 is a deficient number, since it is larger than the sum of its proper divisors (50252977348).

51003021512 is a wasteful number, since it uses less digits than its factorization.

51003021512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 375022240 (or 375022236 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 20.

Adding to 51003021512 its reverse (21512030015), we get a palindrome (72515051527).

The spelling of 51003021512 in words is "fifty-one billion, three million, twenty-one thousand, five hundred twelve".