51503105312 has 24 divisors (see below), whose sum is σ = 103309887996. Its totient is φ = 25265673472.

The previous prime is 51503105299. The next prime is 51503105333. The reversal of 51503105312 is 21350130515.

It is a happy number.

51503105312 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 49605980176 + 1897125136 = 222724^2 + 43556^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15182003 + ... + 15185394.

Almost surely, 2^51503105312 is an apocalyptic number.

It is an amenable number.

51503105312 is an abundant number, since it is smaller than the sum of its proper divisors (51806782684).

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

51503105312 is a wasteful number, since it uses less digits than its factorization.

51503105312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30367460 (or 30367452 counting only the distinct ones).

The product of its (nonzero) digits is 2250, while the sum is 26.

Adding to 51503105312 its reverse (21350130515), we get a palindrome (72853235827).

The spelling of 51503105312 in words is "fifty-one billion, five hundred three million, one hundred five thousand, three hundred twelve".