51318966 has 16 divisors (see below), whose sum is σ = 102801600. Its totient is φ = 17079048.

The previous prime is 51318931. The next prime is 51318973. The reversal of 51318966 is 66981315.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2536 + ... + 10443.

It is an arithmetic number, because the mean of its divisors is an integer number (6425100).

Almost surely, 2^51318966 is an apocalyptic number.

51318966 is an abundant number, since it is smaller than the sum of its proper divisors (51482634).

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

51318966 is a wasteful number, since it uses less digits than its factorization.

51318966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13643.

The product of its digits is 38880, while the sum is 39.

The square root of 51318966 is about 7163.7257066418. The cubic root of 51318966 is about 371.6144838381.

The spelling of 51318966 in words is "fifty-one million, three hundred eighteen thousand, nine hundred sixty-six".