285522 has 16 divisors (see below), whose sum is σ = 596160. Its totient is φ = 90992.

The previous prime is 285521. The next prime is 285533. The reversal of 285522 is 225582.

It is a junction number, because it is equal to n+sod(n) for n = 285492 and 285501.

It is not an unprimeable number, because it can be changed into a prime (285521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 897 + ... + 1172.

It is an arithmetic number, because the mean of its divisors is an integer number (37260).

2²⁸⁵⁵²² is an apocalyptic number.

285522 is an abundant number, since it is smaller than the sum of its proper divisors (310638).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

285522 is a wasteful number, since it uses less digits than its factorization.

285522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2097.

The product of its digits is 1600, while the sum is 24.

The square root of 285522 is about 534.3425867363. The cubic root of 285522 is about 65.8485969344.

The spelling of 285522 in words is "two hundred eighty-five thousand, five hundred twenty-two".