51313772 has 12 divisors (see below), whose sum is σ = 90256320. Its totient is φ = 25526256.

The previous prime is 51313753. The next prime is 51313781. The reversal of 51313772 is 27731315.

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, 31772 + ... + 33347.

It is an arithmetic number, because the mean of its divisors is an integer number (7521360).

Almost surely, 2^51313772 is an apocalyptic number.

It is an amenable number.

51313772 is a deficient number, since it is larger than the sum of its proper divisors (38942548).

51313772 is a wasteful number, since it uses less digits than its factorization.

51313772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65320 (or 65318 counting only the distinct ones).

The product of its digits is 4410, while the sum is 29.

The square root of 51313772 is about 7163.3631766092. The cubic root of 51313772 is about 371.6019463632.

The spelling of 51313772 in words is "fifty-one million, three hundred thirteen thousand, seven hundred seventy-two".