253085209 has 16 divisors (see below), whose sum is σ = 282257920. Its totient is φ = 225348480.

The previous prime is 253085207. The next prime is 253085213. The reversal of 253085209 is 902580352.

253085209 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 253085209 - 2¹ = 253085207 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (253085201) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 151909 + ... + 153565.

It is an arithmetic number, because the mean of its divisors is an integer number (17641120).

Almost surely, 2^253085209 is an apocalyptic number.

It is an amenable number.

253085209 is a deficient number, since it is larger than the sum of its proper divisors (29172711).

253085209 is a wasteful number, since it uses less digits than its factorization.

253085209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2080.

The product of its (nonzero) digits is 21600, while the sum is 34.

The square root of 253085209 is about 15908.6520170629. The cubic root of 253085209 is about 632.5413505438.

The spelling of 253085209 in words is "two hundred fifty-three million, eighty-five thousand, two hundred nine".