275085 has 12 divisors (see below), whose sum is σ = 476892. Its totient is φ = 146688.

The previous prime is 275083. The next prime is 275087. The reversal of 275085 is 580572.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (275083) and next prime (275087).

It can be written as a sum of positive squares in 2 ways, for example, as 125316 + 149769 = 354^2 + 387^2 .

It is not a de Polignac number, because 275085 - 2¹ = 275083 is a prime.

It is a plaindrome in base 7.

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 275085.

It is not an unprimeable number, because it can be changed into a prime (275083) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3012 + ... + 3101.

It is an arithmetic number, because the mean of its divisors is an integer number (39741).

2²⁷⁵⁰⁸⁵ is an apocalyptic number.

It is an amenable number.

275085 is a deficient number, since it is larger than the sum of its proper divisors (201807).

275085 is a wasteful number, since it uses less digits than its factorization.

275085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6124 (or 6121 counting only the distinct ones).

The product of its (nonzero) digits is 2800, while the sum is 27.

The square root of 275085 is about 524.4854621436. The cubic root of 275085 is about 65.0362716689.

Adding to 275085 its product of nonzero digits (2800), we get a triangular number (277885 = T₇₄₅).

The spelling of 275085 in words is "two hundred seventy-five thousand, eighty-five".