275045509 has 2 divisors, whose sum is σ = 275045510. Its totient is φ = 275045508.

The previous prime is 275045437. The next prime is 275045513. The reversal of 275045509 is 905540572.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 220433409 + 54612100 = 14847^2 + 7390^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-275045509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (275045579) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 137522754 + 137522755.

It is an arithmetic number, because the mean of its divisors is an integer number (137522755).

Almost surely, 2^275045509 is an apocalyptic number.

It is an amenable number.

275045509 is a deficient number, since it is larger than the sum of its proper divisors (1).

275045509 is an equidigital number, since it uses as much as digits as its factorization.

275045509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 63000, while the sum is 37.

The square root of 275045509 is about 16584.4960429915. The cubic root of 275045509 is about 650.3315933357.

The spelling of 275045509 in words is "two hundred seventy-five million, forty-five thousand, five hundred nine".