517399 has 2 divisors, whose sum is σ = 517400. Its totient is φ = 517398.

The previous prime is 517393. The next prime is 517403. The reversal of 517399 is 993715.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 517399 - 2⁵ = 517367 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (517393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 258699 + 258700.

It is an arithmetic number, because the mean of its divisors is an integer number (258700).

2⁵¹⁷³⁹⁹ is an apocalyptic number.

517399 is a deficient number, since it is larger than the sum of its proper divisors (1).

517399 is an equidigital number, since it uses as much as digits as its factorization.

517399 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8505, while the sum is 34.

The square root of 517399 is about 719.3045252186. The cubic root of 517399 is about 80.2802152633.

The spelling of 517399 in words is "five hundred seventeen thousand, three hundred ninety-nine".