51325994530 has 8 divisors (see below), whose sum is σ = 92386790172. Its totient is φ = 20530397808.

The previous prime is 51325994521. The next prime is 51325994593. The reversal of 51325994530 is 3549952315.

It can be written as a sum of positive squares in 2 ways, for example, as 51136133689 + 189860841 = 226133^2 + 13779^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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, 2566299717 + ... + 2566299736.

Almost surely, 2^51325994530 is an apocalyptic number.

51325994530 is a deficient number, since it is larger than the sum of its proper divisors (41060795642).

51325994530 is a wasteful number, since it uses less digits than its factorization.

51325994530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5132599460.

The product of its (nonzero) digits is 729000, while the sum is 46.

The spelling of 51325994530 in words is "fifty-one billion, three hundred twenty-five million, nine hundred ninety-four thousand, five hundred thirty".