285359 has 4 divisors (see below), whose sum is σ = 286440. Its totient is φ = 284280.

The previous prime is 285343. The next prime is 285377. The reversal of 285359 is 953582.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 285359 - 2⁴ = 285343 is a prime.

It is a Duffinian number.

285359 is a Rhonda number in base 10.

Its product of digits (10800) is a multiple of the sum of its prime divisors (1080).

It is a plaindrome in base 16.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 285359.

It is not an unprimeable number, because it can be changed into a prime (285559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 152 + ... + 770.

It is an arithmetic number, because the mean of its divisors is an integer number (71610).

2²⁸⁵³⁵⁹ is an apocalyptic number.

285359 is a deficient number, since it is larger than the sum of its proper divisors (1081).

285359 is an equidigital number, since it uses as much as digits as its factorization.

285359 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1080.

The product of its digits is 10800, while the sum is 32.

The square root of 285359 is about 534.1900410902. The cubic root of 285359 is about 65.8360639078.

The spelling of 285359 in words is "two hundred eighty-five thousand, three hundred fifty-nine".