275260561 has 2 divisors, whose sum is σ = 275260562. Its totient is φ = 275260560.

The previous prime is 275260493. The next prime is 275260571. The reversal of 275260561 is 165062572.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 257409936 + 17850625 = 16044^2 + 4225^2 .

It is a cyclic number.

It is not a de Polignac number, because 275260561 - 2¹¹ = 275258513 is a prime.

It is not a weakly prime, because it can be changed into another prime (275260571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 137630280 + 137630281.

It is an arithmetic number, because the mean of its divisors is an integer number (137630281).

Almost surely, 2^275260561 is an apocalyptic number.

It is an amenable number.

275260561 is a deficient number, since it is larger than the sum of its proper divisors (1).

275260561 is an equidigital number, since it uses as much as digits as its factorization.

275260561 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25200, while the sum is 34.

The square root of 275260561 is about 16590.9783014746. The cubic root of 275260561 is about 650.5010424767.

The spelling of 275260561 in words is "two hundred seventy-five million, two hundred sixty thousand, five hundred sixty-one".