455552809 has 2 divisors, whose sum is σ = 455552810. Its totient is φ = 455552808.

The previous prime is 455552771. The next prime is 455552813. The reversal of 455552809 is 908255554.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 262342809 + 193210000 = 16197^2 + 13900^2 .

It is a cyclic number.

It is not a de Polignac number, because 455552809 - 2¹¹ = 455550761 is a prime.

It is a super-3 number, since 3×455552809³ (a number of 27 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (455552869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 227776404 + 227776405.

It is an arithmetic number, because the mean of its divisors is an integer number (227776405).

Almost surely, 2^455552809 is an apocalyptic number.

It is an amenable number.

455552809 is a deficient number, since it is larger than the sum of its proper divisors (1).

455552809 is an equidigital number, since it uses as much as digits as its factorization.

455552809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 360000, while the sum is 43.

The square root of 455552809 is about 21343.6831170255. The cubic root of 455552809 is about 769.4485335703.

The spelling of 455552809 in words is "four hundred fifty-five million, five hundred fifty-two thousand, eight hundred nine".