275296261 has 2 divisors, whose sum is σ = 275296262. Its totient is φ = 275296260.

The previous prime is 275296253. The next prime is 275296279. The reversal of 275296261 is 162692572.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 240839361 + 34456900 = 15519^2 + 5870^2 .

It is a cyclic number.

It is not a de Polignac number, because 275296261 - 2³ = 275296253 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (275296201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 137648130 + 137648131.

It is an arithmetic number, because the mean of its divisors is an integer number (137648131).

Almost surely, 2^275296261 is an apocalyptic number.

It is an amenable number.

275296261 is a deficient number, since it is larger than the sum of its proper divisors (1).

275296261 is an equidigital number, since it uses as much as digits as its factorization.

275296261 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 90720, while the sum is 40.

The square root of 275296261 is about 16592.0541525153. The cubic root of 275296261 is about 650.5291635695.

The spelling of 275296261 in words is "two hundred seventy-five million, two hundred ninety-six thousand, two hundred sixty-one".