522985 has 4 divisors (see below), whose sum is σ = 627588. Its totient is φ = 418384.

The previous prime is 522961. The next prime is 522989. The reversal of 522985 is 589225.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 177241 + 345744 = 421^2 + 588^2 .

It is a cyclic number.

It is not a de Polignac number, because 522985 - 2⁷ = 522857 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a nialpdrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (522989) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52294 + ... + 52303.

It is an arithmetic number, because the mean of its divisors is an integer number (156897).

2⁵²²⁹⁸⁵ is an apocalyptic number.

It is an amenable number.

522985 is a deficient number, since it is larger than the sum of its proper divisors (104603).

522985 is a wasteful number, since it uses less digits than its factorization.

522985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104602.

The product of its digits is 7200, while the sum is 31.

The square root of 522985 is about 723.1770184402. The cubic root of 522985 is about 80.5680917646.

The spelling of 522985 in words is "five hundred twenty-two thousand, nine hundred eighty-five".