275823945 has 12 divisors (see below), whose sum is σ = 478094916. Its totient is φ = 147106080.

The previous prime is 275823943. The next prime is 275823967. The reversal of 275823945 is 549328572.

275823945 is a `hidden beast` number, since 27 + 582 + 3 + 9 + 45 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 194769936 + 81054009 = 13956^2 + 9003^2 .

It is not a de Polignac number, because 275823945 - 2¹ = 275823943 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 6129421 = 275823945 / (2 + 7 + 5 + 8 + 2 + 3 + 9 + 4 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 275823945.

It is not an unprimeable number, because it can be changed into a prime (275823941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3064666 + ... + 3064755.

It is an arithmetic number, because the mean of its divisors is an integer number (39841243).

Almost surely, 2^275823945 is an apocalyptic number.

It is an amenable number.

275823945 is a deficient number, since it is larger than the sum of its proper divisors (202270971).

275823945 is a wasteful number, since it uses less digits than its factorization.

275823945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6129432 (or 6129429 counting only the distinct ones).

The product of its digits is 604800, while the sum is 45.

The square root of 275823945 is about 16607.9482477517. The cubic root of 275823945 is about 650.9445400027.

The spelling of 275823945 in words is "two hundred seventy-five million, eight hundred twenty-three thousand, nine hundred forty-five".