51310808 has 16 divisors (see below), whose sum is σ = 96316560. Its totient is φ = 25626400.

The previous prime is 51310801. The next prime is 51310829. The reversal of 51310808 is 80801315.

51310808 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×51310808² = 5265598035225728, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51310801) 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, 5138 + ... + 11358.

It is an arithmetic number, because the mean of its divisors is an integer number (6019785).

Almost surely, 2^51310808 is an apocalyptic number.

It is an amenable number.

51310808 is a deficient number, since it is larger than the sum of its proper divisors (45005752).

51310808 is a wasteful number, since it uses less digits than its factorization.

51310808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7258 (or 7254 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 26.

The square root of 51310808 is about 7163.1562875593. The cubic root of 51310808 is about 371.5947913680.

The spelling of 51310808 in words is "fifty-one million, three hundred ten thousand, eight hundred eight".