285575 has 6 divisors (see below), whose sum is σ = 354144. Its totient is φ = 228440.

The previous prime is 285569. The next prime is 285599. The reversal of 285575 is 575582.

It is a happy number.

It is not a de Polignac number, because 285575 - 2⁴ = 285559 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5687 + ... + 5736.

It is an arithmetic number, because the mean of its divisors is an integer number (59024).

2²⁸⁵⁵⁷⁵ is an apocalyptic number.

285575 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

285575 is a deficient number, since it is larger than the sum of its proper divisors (68569).

285575 is a wasteful number, since it uses less digits than its factorization.

285575 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11433 (or 11428 counting only the distinct ones).

The product of its digits is 14000, while the sum is 32.

The square root of 285575 is about 534.3921780865. The cubic root of 285575 is about 65.8526710626.

The spelling of 285575 in words is "two hundred eighty-five thousand, five hundred seventy-five".