85287 has 4 divisors (see below), whose sum is σ = 113720. Its totient is φ = 56856.

The previous prime is 85259. The next prime is 85297. The reversal of 85287 is 78258.

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

It is not a de Polignac number, because 85287 - 2⁶ = 85223 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85237) 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, 14212 + ... + 14217.

It is an arithmetic number, because the mean of its divisors is an integer number (28430).

2⁸⁵²⁸⁷ is an apocalyptic number.

85287 is a deficient number, since it is larger than the sum of its proper divisors (28433).

85287 is a wasteful number, since it uses less digits than its factorization.

85287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28432.

The product of its digits is 4480, while the sum is 30.

The square root of 85287 is about 292.0393809061. The cubic root of 85287 is about 44.0177270168.

It can be divided in two parts, 852 and 87, that added together give a palindrome (939).

The spelling of 85287 in words is "eighty-five thousand, two hundred eighty-seven".