51039984 has 40 divisors (see below), whose sum is σ = 139611600. Its totient is φ = 16012288.

The previous prime is 51039973. The next prime is 51040019. The reversal of 51039984 is 48993015.

51039984 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

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 in 7 ways as a sum of consecutive naturals, for example, 30459 + ... + 32090.

It is an arithmetic number, because the mean of its divisors is an integer number (3490290).

Almost surely, 2^51039984 is an apocalyptic number.

It is an amenable number.

51039984 is an abundant number, since it is smaller than the sum of its proper divisors (88571616).

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

51039984 is a wasteful number, since it uses less digits than its factorization.

51039984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62577 (or 62571 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 39.

The square root of 51039984 is about 7144.2273200116. The cubic root of 51039984 is about 370.9398652422.

The spelling of 51039984 in words is "fifty-one million, thirty-nine thousand, nine hundred eighty-four".