522399 has 16 divisors (see below), whose sum is σ = 744192. Its totient is φ = 325248.

The previous prime is 522391. The next prime is 522409. The reversal of 522399 is 993225.

It is not a de Polignac number, because 522399 - 2³ = 522391 is a prime.

It is a nialpdrome in base 9 and base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (522391) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4567 + ... + 4679.

It is an arithmetic number, because the mean of its divisors is an integer number (46512).

2⁵²²³⁹⁹ is an apocalyptic number.

522399 is a deficient number, since it is larger than the sum of its proper divisors (221793).

522399 is a wasteful number, since it uses less digits than its factorization.

522399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206.

The product of its digits is 4860, while the sum is 30.

The square root of 522399 is about 722.7717482027. The cubic root of 522399 is about 80.5379885770.

The spelling of 522399 in words is "five hundred twenty-two thousand, three hundred ninety-nine".