275252805 has 24 divisors (see below), whose sum is σ = 490002552. Its totient is φ = 142833024.

The previous prime is 275252777. The next prime is 275252837. The reversal of 275252805 is 508252572.

It can be written as a sum of positive squares in 4 ways, for example, as 7144929 + 268107876 = 2673^2 + 16374^2 .

It is not a de Polignac number, because 275252805 - 2⁵ = 275252773 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 275252805.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 80994 + ... + 84323.

It is an arithmetic number, because the mean of its divisors is an integer number (20416773).

Almost surely, 2^275252805 is an apocalyptic number.

It is an amenable number.

275252805 is a deficient number, since it is larger than the sum of its proper divisors (214749747).

275252805 is a wasteful number, since it uses less digits than its factorization.

275252805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165365 (or 165362 counting only the distinct ones).

The product of its (nonzero) digits is 56000, while the sum is 36.

The square root of 275252805 is about 16590.7445583373. The cubic root of 275252805 is about 650.4949327100.

The spelling of 275252805 in words is "two hundred seventy-five million, two hundred fifty-two thousand, eight hundred five".