275984945 has 8 divisors (see below), whose sum is σ = 331291944. Its totient is φ = 220714624.

The previous prime is 275984921. The next prime is 275985001. The reversal of 275984945 is 549489572.

It can be written as a sum of positive squares in 4 ways, for example, as 6270016 + 269714929 = 2504^2 + 16423^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 275984945 - 2²⁸ = 7549489 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11717 + ... + 26253.

It is an arithmetic number, because the mean of its divisors is an integer number (41411493).

Almost surely, 2^275984945 is an apocalyptic number.

It is an amenable number.

275984945 is a deficient number, since it is larger than the sum of its proper divisors (55306999).

275984945 is a wasteful number, since it uses less digits than its factorization.

275984945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18339.

The product of its digits is 3628800, while the sum is 53.

The square root of 275984945 is about 16612.7946174026. The cubic root of 275984945 is about 651.0711687071.

The spelling of 275984945 in words is "two hundred seventy-five million, nine hundred eighty-four thousand, nine hundred forty-five".