51715368 has 32 divisors (see below), whose sum is σ = 143654400. Its totient is φ = 17238384.

The previous prime is 51715361. The next prime is 51715393. The reversal of 51715368 is 86351715.

51715368 is a `hidden beast` number, since 51 + 71 + 536 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (51715361) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 119496 + ... + 119927.

It is an arithmetic number, because the mean of its divisors is an integer number (4489200).

Almost surely, 2^51715368 is an apocalyptic number.

It is an amenable number.

51715368 is an abundant number, since it is smaller than the sum of its proper divisors (91939032).

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

51715368 is a wasteful number, since it uses less digits than its factorization.

51715368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239438 (or 239428 counting only the distinct ones).

The product of its digits is 25200, while the sum is 36.

The square root of 51715368 is about 7191.3397917217. The cubic root of 51715368 is about 372.5688487367.

The spelling of 51715368 in words is "fifty-one million, seven hundred fifteen thousand, three hundred sixty-eight".