275287 has 4 divisors (see below), whose sum is σ = 287280. Its totient is φ = 263296.

The previous prime is 275269. The next prime is 275299. The reversal of 275287 is 782572.

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

It is a cyclic number.

It is not a de Polignac number, because 275287 - 2⁷ = 275159 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a d-powerful number, because it can be written as 2¹⁴ + 7⁶ + 2¹⁴ + 5⁵ + 8⁴ + 7⁶ .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (275207) 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, 5962 + ... + 6007.

It is an arithmetic number, because the mean of its divisors is an integer number (71820).

2²⁷⁵²⁸⁷ is an apocalyptic number.

275287 is a deficient number, since it is larger than the sum of its proper divisors (11993).

275287 is a wasteful number, since it uses less digits than its factorization.

275287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11992.

The product of its digits is 7840, while the sum is 31.

The square root of 275287 is about 524.6779964893. The cubic root of 275287 is about 65.0521868861.

The spelling of 275287 in words is "two hundred seventy-five thousand, two hundred eighty-seven".