287255 has 8 divisors (see below), whose sum is σ = 349872. Its totient is φ = 226368.

The previous prime is 287251. The next prime is 287257. The reversal of 287255 is 552782.

287255 is nontrivially palindromic in base 15.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 287255 - 2² = 287251 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 287255.

It is not an unprimeable number, because it can be changed into a prime (287251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29 + ... + 758.

It is an arithmetic number, because the mean of its divisors is an integer number (43734).

2²⁸⁷²⁵⁵ is an apocalyptic number.

287255 is a deficient number, since it is larger than the sum of its proper divisors (62617).

287255 is an equidigital number, since it uses as much as digits as its factorization.

287255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 865.

The product of its digits is 5600, while the sum is 29.

The square root of 287255 is about 535.9617523667. The cubic root of 287255 is about 65.9815528487.

The spelling of 287255 in words is "two hundred eighty-seven thousand, two hundred fifty-five".