51408784 has 20 divisors (see below), whose sum is σ = 113833984. Its totient is φ = 22032288.

The previous prime is 51408767. The next prime is 51408817. The reversal of 51408784 is 48780415.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 229392 + ... + 229615.

Almost surely, 2^51408784 is an apocalyptic number.

It is an amenable number.

51408784 is an abundant number, since it is smaller than the sum of its proper divisors (62425200).

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

51408784 is a wasteful number, since it uses less digits than its factorization.

51408784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 459022 (or 459016 counting only the distinct ones).

The product of its (nonzero) digits is 35840, while the sum is 37.

The square root of 51408784 is about 7169.9919107346. The cubic root of 51408784 is about 371.8311562745.

It can be divided in two parts, 5140 and 8784, that added together give a square (13924 = 118²).

The spelling of 51408784 in words is "fifty-one million, four hundred eight thousand, seven hundred eighty-four".