51307316 has 12 divisors (see below), whose sum is σ = 89951232. Its totient is φ = 25606968.

The previous prime is 51307303. The next prime is 51307337. The reversal of 51307316 is 61370315.

It is a happy number.

51307316 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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, 9140 + ... + 13643.

It is an arithmetic number, because the mean of its divisors is an integer number (7495936).

Almost surely, 2^51307316 is an apocalyptic number.

It is an amenable number.

51307316 is a deficient number, since it is larger than the sum of its proper divisors (38643916).

51307316 is a wasteful number, since it uses less digits than its factorization.

51307316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23350 (or 23348 counting only the distinct ones).

The product of its (nonzero) digits is 1890, while the sum is 26.

The square root of 51307316 is about 7162.9125361127. The cubic root of 51307316 is about 371.5863614452.

The spelling of 51307316 in words is "fifty-one million, three hundred seven thousand, three hundred sixteen".