275281 has 4 divisors (see below), whose sum is σ = 291492. Its totient is φ = 259072.

The previous prime is 275269. The next prime is 275299. The reversal of 275281 is 182572.

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 250000 + 25281 = 500^2 + 159^2 .

It is a cyclic number.

It is not a de Polignac number, because 275281 - 2⁷ = 275153 is a prime.

It is a super-2 number, since 2×275281² = 151559257922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (275201) 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, 8080 + ... + 8113.

It is an arithmetic number, because the mean of its divisors is an integer number (72873).

2²⁷⁵²⁸¹ is an apocalyptic number.

It is an amenable number.

275281 is a deficient number, since it is larger than the sum of its proper divisors (16211).

275281 is a wasteful number, since it uses less digits than its factorization.

275281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16210.

The product of its digits is 1120, while the sum is 25.

The square root of 275281 is about 524.6722786655. The cubic root of 275281 is about 65.0517142691.

The spelling of 275281 in words is "two hundred seventy-five thousand, two hundred eighty-one".