522689 has 2 divisors, whose sum is σ = 522690. Its totient is φ = 522688.

The previous prime is 522679. The next prime is 522703. The reversal of 522689 is 986225.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 350464 + 172225 = 592^2 + 415^2 .

It is a cyclic number.

It is not a de Polignac number, because 522689 - 2⁴ = 522673 is a prime.

It is not a weakly prime, because it can be changed into another prime (522659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 261344 + 261345.

It is an arithmetic number, because the mean of its divisors is an integer number (261345).

2⁵²²⁶⁸⁹ is an apocalyptic number.

It is an amenable number.

522689 is a deficient number, since it is larger than the sum of its proper divisors (1).

522689 is an equidigital number, since it uses as much as digits as its factorization.

522689 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8640, while the sum is 32.

The square root of 522689 is about 722.9723369535. The cubic root of 522689 is about 80.5528888711.

The spelling of 522689 in words is "five hundred twenty-two thousand, six hundred eighty-nine".