455309509 has 2 divisors, whose sum is σ = 455309510. Its totient is φ = 455309508.

The previous prime is 455309501. The next prime is 455309513. The reversal of 455309509 is 905903554.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 320517409 + 134792100 = 17903^2 + 11610^2 .

It is a cyclic number.

It is not a de Polignac number, because 455309509 - 2³ = 455309501 is a prime.

It is a super-3 number, since 3×455309509³ (a number of 27 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (455309501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 227654754 + 227654755.

It is an arithmetic number, because the mean of its divisors is an integer number (227654755).

Almost surely, 2^455309509 is an apocalyptic number.

It is an amenable number.

455309509 is a deficient number, since it is larger than the sum of its proper divisors (1).

455309509 is an equidigital number, since it uses as much as digits as its factorization.

455309509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 121500, while the sum is 40.

The square root of 455309509 is about 21337.9827771980. The cubic root of 455309509 is about 769.3115277450.

The spelling of 455309509 in words is "four hundred fifty-five million, three hundred nine thousand, five hundred nine".