275005 has 4 divisors (see below), whose sum is σ = 330012. Its totient is φ = 220000.

The previous prime is 275003. The next prime is 275027. The reversal of 275005 is 500572.

It is a happy number.

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 38809 + 236196 = 197^2 + 486^2 .

It is not a de Polignac number, because 275005 - 2¹ = 275003 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (275003) 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, 27496 + ... + 27505.

It is an arithmetic number, because the mean of its divisors is an integer number (82503).

2²⁷⁵⁰⁰⁵ is an apocalyptic number.

It is an amenable number.

275005 is a deficient number, since it is larger than the sum of its proper divisors (55007).

275005 is an equidigital number, since it uses as much as digits as its factorization.

275005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55006.

The product of its (nonzero) digits is 350, while the sum is 19.

The square root of 275005 is about 524.4091913764. The cubic root of 275005 is about 65.0299664588.

Adding to 275005 its reverse (500572), we get a palindrome (775577).

The spelling of 275005 in words is "two hundred seventy-five thousand, five".