51982868 has 24 divisors (see below), whose sum is σ = 104227200. Its totient is φ = 22222368.

The previous prime is 51982859. The next prime is 51982871. The reversal of 51982868 is 86828915.

It is a congruent number.

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, 10178 + ... + 14406.

It is an arithmetic number, because the mean of its divisors is an integer number (4342800).

Almost surely, 2^51982868 is an apocalyptic number.

It is an amenable number.

51982868 is an abundant number, since it is smaller than the sum of its proper divisors (52244332).

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

51982868 is a wasteful number, since it uses less digits than its factorization.

51982868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4679 (or 4677 counting only the distinct ones).

The product of its digits is 276480, while the sum is 47.

The square root of 51982868 is about 7209.9145626006. The cubic root of 51982868 is about 373.2101205504.

The spelling of 51982868 in words is "fifty-one million, nine hundred eighty-two thousand, eight hundred sixty-eight".