287575 has 6 divisors (see below), whose sum is σ = 356624. Its totient is φ = 230040.

The previous prime is 287557. The next prime is 287579. The reversal of 287575 is 575782.

It is a de Polignac number, because none of the positive numbers 2^k-287575 is a prime.

It is a Duffinian number.

287575 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 287575.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (287579) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5727 + ... + 5776.

2²⁸⁷⁵⁷⁵ is an apocalyptic number.

287575 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

287575 is a deficient number, since it is larger than the sum of its proper divisors (69049).

287575 is a wasteful number, since it uses less digits than its factorization.

287575 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11513 (or 11508 counting only the distinct ones).

The product of its digits is 19600, while the sum is 34.

The square root of 287575 is about 536.2601980382. The cubic root of 287575 is about 66.0060447479.

It can be divided in two parts, 287 and 575, that multiplied together give a triangular number (165025 = T₅₇₄).

The spelling of 287575 in words is "two hundred eighty-seven thousand, five hundred seventy-five".