522287 has 4 divisors (see below), whose sum is σ = 525480. Its totient is φ = 519096.

The previous prime is 522283. The next prime is 522289. The reversal of 522287 is 782225.

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

It is a cyclic number.

It is not a de Polignac number, because 522287 - 2² = 522283 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (522281) 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 in 3 ways as a sum of consecutive naturals, for example, 1337 + ... + 1682.

It is an arithmetic number, because the mean of its divisors is an integer number (131370).

2⁵²²²⁸⁷ is an apocalyptic number.

522287 is a deficient number, since it is larger than the sum of its proper divisors (3193).

522287 is a wasteful number, since it uses less digits than its factorization.

522287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3192.

The product of its digits is 2240, while the sum is 26.

The square root of 522287 is about 722.6942645407. The cubic root of 522287 is about 80.5322325046.

The spelling of 522287 in words is "five hundred twenty-two thousand, two hundred eighty-seven".