51508302722 has 6 divisors (see below), whose sum is σ = 77262935529. Its totient is φ = 25753990880.

The previous prime is 51508302653. The next prime is 51508302733. The reversal of 51508302722 is 22720380515.

51508302722 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 39425676481 + 12082626241 = 198559^2 + 109921^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=160481.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 240722 + ... + 401202.

Almost surely, 2^51508302722 is an apocalyptic number.

51508302722 is a deficient number, since it is larger than the sum of its proper divisors (25754632807).

51508302722 is an frugal number, since it uses more digits than its factorization.

51508302722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320964 (or 160483 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 35.

The spelling of 51508302722 in words is "fifty-one billion, five hundred eight million, three hundred two thousand, seven hundred twenty-two".