285075 has 36 divisors (see below), whose sum is σ = 586768. Its totient is φ = 129600.

The previous prime is 285071. The next prime is 285079. The reversal of 285075 is 570582.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (285071) and next prime (285079).

It is not a de Polignac number, because 285075 - 2² = 285071 is a prime.

285075 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (285071) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1485 + ... + 1665.

2²⁸⁵⁰⁷⁵ is an apocalyptic number.

285075 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

285075 is an abundant number, since it is smaller than the sum of its proper divisors (301693).

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

285075 is a wasteful number, since it uses less digits than its factorization.

285075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204 (or 196 counting only the distinct ones).

The product of its (nonzero) digits is 2800, while the sum is 27.

The square root of 285075 is about 533.9241519167. The cubic root of 285075 is about 65.8142158166.

The spelling of 285075 in words is "two hundred eighty-five thousand, seventy-five".