275828261 has 2 divisors, whose sum is σ = 275828262. Its totient is φ = 275828260.

The previous prime is 275828243. The next prime is 275828323. The reversal of 275828261 is 162828572.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 248850625 + 26977636 = 15775^2 + 5194^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-275828261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (275828221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 137914130 + 137914131.

It is an arithmetic number, because the mean of its divisors is an integer number (137914131).

Almost surely, 2^275828261 is an apocalyptic number.

It is an amenable number.

275828261 is a deficient number, since it is larger than the sum of its proper divisors (1).

275828261 is an equidigital number, since it uses as much as digits as its factorization.

275828261 is an evil number, because the sum of its binary digits is even.

The product of its digits is 107520, while the sum is 41.

The square root of 275828261 is about 16608.0781850279. The cubic root of 275828261 is about 650.9479352385.

The spelling of 275828261 in words is "two hundred seventy-five million, eight hundred twenty-eight thousand, two hundred sixty-one".