51408868 has 12 divisors (see below), whose sum is σ = 102817792. Its totient is φ = 22032360.

The previous prime is 51408829. The next prime is 51408871. The reversal of 51408868 is 86880415.

51408868 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

51408868 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 51408868.

It is an unprimeable number.

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, 917988 + ... + 918043.

Almost surely, 2^51408868 is an apocalyptic number.

It is an amenable number.

51408868 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

51408868 is a wasteful number, since it uses less digits than its factorization.

51408868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1836042 (or 1836040 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 40.

The square root of 51408868 is about 7169.9977684794. The cubic root of 51408868 is about 371.8313587937.

The spelling of 51408868 in words is "fifty-one million, four hundred eight thousand, eight hundred sixty-eight".