520317 has 16 divisors (see below), whose sum is σ = 881280. Its totient is φ = 297216.

The previous prime is 520313. The next prime is 520339. The reversal of 520317 is 713025.

It is not a de Polignac number, because 520317 - 2² = 520313 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 520317.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 520317.

It is not an unprimeable number, because it can be changed into a prime (520313) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 1188 + ... + 1565.

It is an arithmetic number, because the mean of its divisors is an integer number (55080).

2⁵²⁰³¹⁷ is an apocalyptic number.

It is an amenable number.

520317 is a deficient number, since it is larger than the sum of its proper divisors (360963).

520317 is a wasteful number, since it uses less digits than its factorization.

520317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2769 (or 2763 counting only the distinct ones).

The product of its (nonzero) digits is 210, while the sum is 18.

The square root of 520317 is about 721.3300215574. The cubic root of 520317 is about 80.4308524943.

The spelling of 520317 in words is "five hundred twenty thousand, three hundred seventeen".