495752209 has 2 divisors, whose sum is σ = 495752210. Its totient is φ = 495752208.

The previous prime is 495752207. The next prime is 495752219. The reversal of 495752209 is 902257594.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 435348225 + 60403984 = 20865^2 + 7772^2 .

It is a cyclic number.

It is not a de Polignac number, because 495752209 - 2¹ = 495752207 is a prime.

Together with 495752207, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (495752207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 247876104 + 247876105.

It is an arithmetic number, because the mean of its divisors is an integer number (247876105).

Almost surely, 2^495752209 is an apocalyptic number.

It is an amenable number.

495752209 is a deficient number, since it is larger than the sum of its proper divisors (1).

495752209 is an equidigital number, since it uses as much as digits as its factorization.

495752209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 226800, while the sum is 43.

The square root of 495752209 is about 22265.4936841742. The cubic root of 495752209 is about 791.4464814411.

The spelling of 495752209 in words is "four hundred ninety-five million, seven hundred fifty-two thousand, two hundred nine".