51812716 has 12 divisors (see below), whose sum is σ = 90869688. Its totient is φ = 25849952.

The previous prime is 51812713. The next prime is 51812723. The reversal of 51812716 is 61721815.

51812716 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (51812713) by changing a digit.

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, 12001 + ... + 15736.

It is an arithmetic number, because the mean of its divisors is an integer number (7572474).

Almost surely, 2^51812716 is an apocalyptic number.

It is an amenable number.

51812716 is a deficient number, since it is larger than the sum of its proper divisors (39056972).

51812716 is a wasteful number, since it uses less digits than its factorization.

51812716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28208 (or 28206 counting only the distinct ones).

The product of its digits is 3360, while the sum is 31.

The square root of 51812716 is about 7198.1050284085. The cubic root of 51812716 is about 372.8024743185.

Subtracting 51812716 from its reverse (61721815), we obtain a palindrome (9909099).

The spelling of 51812716 in words is "fifty-one million, eight hundred twelve thousand, seven hundred sixteen".