285253 has 4 divisors (see below), whose sum is σ = 287980. Its totient is φ = 282528.

The previous prime is 285251. The next prime is 285281. The reversal of 285253 is 352582.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 248004 + 37249 = 498^2 + 193^2 .

It is not a de Polignac number, because 285253 - 2¹ = 285251 is a prime.

It is a d-powerful number, because it can be written as 2⁷ + 8⁶ + 2¹¹ + 5⁴ + 5⁴ + 3⁹ .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (285251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1200 + ... + 1417.

It is an arithmetic number, because the mean of its divisors is an integer number (71995).

2²⁸⁵²⁵³ is an apocalyptic number.

It is an amenable number.

285253 is a deficient number, since it is larger than the sum of its proper divisors (2727).

285253 is a wasteful number, since it uses less digits than its factorization.

285253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2726.

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

The square root of 285253 is about 534.0908162476. The cubic root of 285253 is about 65.8279110348.

The spelling of 285253 in words is "two hundred eighty-five thousand, two hundred fifty-three".