275201305 has 4 divisors (see below), whose sum is σ = 330241572. Its totient is φ = 220161040.

The previous prime is 275201293. The next prime is 275201323. The reversal of 275201305 is 503102572.

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 194435136 + 80766169 = 13944^2 + 8987^2 .

It is not a de Polignac number, because 275201305 - 2¹⁷ = 275070233 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 275201305.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27520126 + ... + 27520135.

It is an arithmetic number, because the mean of its divisors is an integer number (82560393).

Almost surely, 2^275201305 is an apocalyptic number.

It is an amenable number.

275201305 is a deficient number, since it is larger than the sum of its proper divisors (55040267).

275201305 is an equidigital number, since it uses as much as digits as its factorization.

275201305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55040266.

The product of its (nonzero) digits is 2100, while the sum is 25.

The square root of 275201305 is about 16589.1924155457. The cubic root of 275201305 is about 650.4543608212.

Adding to 275201305 its reverse (503102572), we get a palindrome (778303877).

The spelling of 275201305 in words is "two hundred seventy-five million, two hundred one thousand, three hundred five".