51317597 has 8 divisors (see below), whose sum is σ = 52024896. Its totient is φ = 50615392.

The previous prime is 51317579. The next prime is 51317599. The reversal of 51317597 is 79571315.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 51317597 - 2⁸ = 51317341 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51317597.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51317599) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21758 + ... + 24000.

It is an arithmetic number, because the mean of its divisors is an integer number (6503112).

Almost surely, 2^51317597 is an apocalyptic number.

It is an amenable number.

51317597 is a deficient number, since it is larger than the sum of its proper divisors (707299).

51317597 is a wasteful number, since it uses less digits than its factorization.

51317597 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2547.

The product of its digits is 33075, while the sum is 38.

The square root of 51317597 is about 7163.6301551657. The cubic root of 51317597 is about 371.6111793759.

The spelling of 51317597 in words is "fifty-one million, three hundred seventeen thousand, five hundred ninety-seven".