51868384 has 12 divisors (see below), whose sum is σ = 102115944. Its totient is φ = 25934176.

The previous prime is 51868373. The next prime is 51868391. The reversal of 51868384 is 48386815.

51868384 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 51868384.

It is a congruent number.

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 as a sum of consecutive naturals, namely, 810412 + ... + 810475.

It is an arithmetic number, because the mean of its divisors is an integer number (8509662).

Almost surely, 2^51868384 is an apocalyptic number.

It is an amenable number.

51868384 is a deficient number, since it is larger than the sum of its proper divisors (50247560).

51868384 is a wasteful number, since it uses less digits than its factorization.

51868384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1620897 (or 1620889 counting only the distinct ones).

The product of its digits is 184320, while the sum is 43.

The square root of 51868384 is about 7201.9708413739. The cubic root of 51868384 is about 372.9359405260.

The spelling of 51868384 in words is "fifty-one million, eight hundred sixty-eight thousand, three hundred eighty-four".