517423 has 8 divisors (see below), whose sum is σ = 538560. Its totient is φ = 496800.

The previous prime is 517417. The next prime is 517457. The reversal of 517423 is 324715.

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 517423 - 2⁹ = 516911 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 517394 and 517403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (517403) 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, 4693 + ... + 4801.

It is an arithmetic number, because the mean of its divisors is an integer number (67320).

2⁵¹⁷⁴²³ is an apocalyptic number.

517423 is a deficient number, since it is larger than the sum of its proper divisors (21137).

517423 is a wasteful number, since it uses less digits than its factorization.

517423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257.

The product of its digits is 840, while the sum is 22.

The square root of 517423 is about 719.3212078064. The cubic root of 517423 is about 80.2814565331.

The spelling of 517423 in words is "five hundred seventeen thousand, four hundred twenty-three".