505517 has 8 divisors (see below), whose sum is σ = 545280. Its totient is φ = 467280.

The previous prime is 505513. The next prime is 505523. The reversal of 505517 is 715505.

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 505517 - 2² = 505513 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 505492 and 505501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505511) 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, 359 + ... + 1067.

It is an arithmetic number, because the mean of its divisors is an integer number (68160).

2⁵⁰⁵⁵¹⁷ is an apocalyptic number.

It is an amenable number.

505517 is a deficient number, since it is larger than the sum of its proper divisors (39763).

505517 is a wasteful number, since it uses less digits than its factorization.

505517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 763.

The product of its (nonzero) digits is 875, while the sum is 23.

The square root of 505517 is about 710.9971870549. The cubic root of 505517 is about 79.6609084926.

The spelling of 505517 in words is "five hundred five thousand, five hundred seventeen".