505317 has 8 divisors (see below), whose sum is σ = 678240. Its totient is φ = 334640.

The previous prime is 505313. The next prime is 505319. The reversal of 505317 is 713505.

It is a happy number.

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 505317 - 2² = 505313 is a prime.

It is a nialpdrome in base 14.

It is a junction number, because it is equal to n+sod(n) for n = 505293 and 505302.

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 505317.

It is not an unprimeable number, because it can be changed into a prime (505313) 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 7 ways as a sum of consecutive naturals, for example, 67 + ... + 1007.

It is an arithmetic number, because the mean of its divisors is an integer number (84780).

2⁵⁰⁵³¹⁷ is an apocalyptic number.

It is an amenable number.

505317 is a deficient number, since it is larger than the sum of its proper divisors (172923).

505317 is a wasteful number, since it uses less digits than its factorization.

505317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1123.

The product of its (nonzero) digits is 525, while the sum is 21.

The square root of 505317 is about 710.8565256084. The cubic root of 505317 is about 79.6504015705.

The spelling of 505317 in words is "five hundred five thousand, three hundred seventeen".