285235 has 4 divisors (see below), whose sum is σ = 342288. Its totient is φ = 228184.

The previous prime is 285227. The next prime is 285251. The reversal of 285235 is 532582.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 532582 = 2 ⋅266291.

It is a cyclic number.

It is not a de Polignac number, because 285235 - 2³ = 285227 is a prime.

It is a d-powerful number, because it can be written as 2 + 8⁴ + 2¹⁸ + 5⁵ + 3⁵ + 5⁶ .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28519 + ... + 28528.

It is an arithmetic number, because the mean of its divisors is an integer number (85572).

2²⁸⁵²³⁵ is an apocalyptic number.

285235 is a deficient number, since it is larger than the sum of its proper divisors (57053).

285235 is an equidigital number, since it uses as much as digits as its factorization.

285235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57052.

The product of its digits is 2400, while the sum is 25.

The square root of 285235 is about 534.0739649150. The cubic root of 285235 is about 65.8265263841.

The spelling of 285235 in words is "two hundred eighty-five thousand, two hundred thirty-five".