285475 has 12 divisors (see below), whose sum is σ = 373240. Its totient is φ = 216000.

The previous prime is 285473. The next prime is 285497. The reversal of 285475 is 574582.

It is not a de Polignac number, because 285475 - 2¹ = 285473 is a prime.

285475 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (285473) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 175 + ... + 775.

2²⁸⁵⁴⁷⁵ is an apocalyptic number.

285475 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

285475 is a deficient number, since it is larger than the sum of its proper divisors (87765).

285475 is a wasteful number, since it uses less digits than its factorization.

285475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 630 (or 625 counting only the distinct ones).

The product of its digits is 11200, while the sum is 31.

The square root of 285475 is about 534.2986056504. The cubic root of 285475 is about 65.8449836064.

The spelling of 285475 in words is "two hundred eighty-five thousand, four hundred seventy-five".