275530005 has 20 divisors (see below), whose sum is σ = 493913772. Its totient is φ = 146949120.

The previous prime is 275529997. The next prime is 275530049. The reversal of 275530005 is 500035572.

It can be written as a sum of positive squares in 2 ways, for example, as 194853681 + 80676324 = 13959^2 + 8982^2 .

It is not a de Polignac number, because 275530005 - 2³ = 275529997 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 339756 + ... + 340565.

Almost surely, 2^275530005 is an apocalyptic number.

It is an amenable number.

275530005 is a deficient number, since it is larger than the sum of its proper divisors (218383767).

275530005 is an equidigital number, since it uses as much as digits as its factorization.

275530005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 680338 (or 680329 counting only the distinct ones).

The product of its (nonzero) digits is 5250, while the sum is 27.

The square root of 275530005 is about 16599.0965115575. The cubic root of 275530005 is about 650.7132250035.

Adding to 275530005 its reverse (500035572), we get a palindrome (775565577).

The spelling of 275530005 in words is "two hundred seventy-five million, five hundred thirty thousand, five".