275305949 has 2 divisors, whose sum is σ = 275305950. Its totient is φ = 275305948.

The previous prime is 275305889. The next prime is 275305957. The reversal of 275305949 is 949503572.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 153313924 + 121992025 = 12382^2 + 11045^2 .

It is a cyclic number.

It is not a de Polignac number, because 275305949 - 2¹² = 275301853 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (275305969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 137652974 + 137652975.

It is an arithmetic number, because the mean of its divisors is an integer number (137652975).

Almost surely, 2^275305949 is an apocalyptic number.

It is an amenable number.

275305949 is a deficient number, since it is larger than the sum of its proper divisors (1).

275305949 is an equidigital number, since it uses as much as digits as its factorization.

275305949 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 340200, while the sum is 44.

The square root of 275305949 is about 16592.3460969207. The cubic root of 275305949 is about 650.5367944428.

The spelling of 275305949 in words is "two hundred seventy-five million, three hundred five thousand, nine hundred forty-nine".