51717392 has 20 divisors (see below), whose sum is σ = 105476880. Its totient is φ = 24497568.

The previous prime is 51717377. The next prime is 51717397. The reversal of 51717392 is 29371715.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (51717397) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 84758 + ... + 85365.

It is an arithmetic number, because the mean of its divisors is an integer number (5273844).

Almost surely, 2^51717392 is an apocalyptic number.

It is an amenable number.

51717392 is an abundant number, since it is smaller than the sum of its proper divisors (53759488).

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

51717392 is a wasteful number, since it uses less digits than its factorization.

51717392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170150 (or 170144 counting only the distinct ones).

The product of its digits is 13230, while the sum is 35.

The square root of 51717392 is about 7191.4805151651. The cubic root of 51717392 is about 372.5737091199.

The spelling of 51717392 in words is "fifty-one million, seven hundred seventeen thousand, three hundred ninety-two".