275856949 has 2 divisors, whose sum is σ = 275856950. Its totient is φ = 275856948.

The previous prime is 275856923. The next prime is 275856989. The reversal of 275856949 is 949658572.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 275228100 + 628849 = 16590^2 + 793^2 .

It is a cyclic number.

It is not a de Polignac number, because 275856949 - 2¹⁹ = 275332661 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 275856949.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (275856989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 137928474 + 137928475.

It is an arithmetic number, because the mean of its divisors is an integer number (137928475).

Almost surely, 2^275856949 is an apocalyptic number.

It is an amenable number.

275856949 is a deficient number, since it is larger than the sum of its proper divisors (1).

275856949 is an equidigital number, since it uses as much as digits as its factorization.

275856949 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5443200, while the sum is 55.

The square root of 275856949 is about 16608.9418386603. The cubic root of 275856949 is about 650.9705021151.

The spelling of 275856949 in words is "two hundred seventy-five million, eight hundred fifty-six thousand, nine hundred forty-nine".