51568716 has 24 divisors (see below), whose sum is σ = 120529584. Its totient is φ = 17160640.

The previous prime is 51568697. The next prime is 51568721. The reversal of 51568716 is 61786515.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

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, 4546 + ... + 11126.

It is an arithmetic number, because the mean of its divisors is an integer number (5022066).

Almost surely, 2^51568716 is an apocalyptic number.

It is an amenable number.

51568716 is an abundant number, since it is smaller than the sum of its proper divisors (68960868).

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

51568716 is a wasteful number, since it uses less digits than its factorization.

51568716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7241 (or 7239 counting only the distinct ones).

The product of its digits is 50400, while the sum is 39.

The square root of 51568716 is about 7181.1361218125. The cubic root of 51568716 is about 372.2163442683.

The spelling of 51568716 in words is "fifty-one million, five hundred sixty-eight thousand, seven hundred sixteen".