522439 has 2 divisors, whose sum is σ = 522440. Its totient is φ = 522438.

The previous prime is 522413. The next prime is 522449. The reversal of 522439 is 934225.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 522439 - 2¹³ = 514247 is a prime.

It is a d-powerful number, because it can be written as 5⁸ + 2¹⁶ + 4 + 2¹⁶ + 3⁶ + 9 .

It is a zygodrome in base 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (522409) 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 as a sum of consecutive naturals, namely, 261219 + 261220.

It is an arithmetic number, because the mean of its divisors is an integer number (261220).

2⁵²²⁴³⁹ is an apocalyptic number.

522439 is a deficient number, since it is larger than the sum of its proper divisors (1).

522439 is an equidigital number, since it uses as much as digits as its factorization.

522439 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2160, while the sum is 25.

The square root of 522439 is about 722.7994189262. The cubic root of 522439 is about 80.5400441178.

It can be divided in two parts, 522 and 439, that added together give a square (961 = 31²).

The spelling of 522439 in words is "five hundred twenty-two thousand, four hundred thirty-nine".