253328209 has 2 divisors, whose sum is σ = 253328210. Its totient is φ = 253328208.

The previous prime is 253328189. The next prime is 253328219. The reversal of 253328209 is 902823352.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 180311184 + 73017025 = 13428^2 + 8545^2 .

It is a cyclic number.

It is not a de Polignac number, because 253328209 - 2¹⁷ = 253197137 is a prime.

It is not a weakly prime, because it can be changed into another prime (253328219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126664104 + 126664105.

It is an arithmetic number, because the mean of its divisors is an integer number (126664105).

Almost surely, 2^253328209 is an apocalyptic number.

It is an amenable number.

253328209 is a deficient number, since it is larger than the sum of its proper divisors (1).

253328209 is an equidigital number, since it uses as much as digits as its factorization.

253328209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 253328209 is about 15916.2875382421. The cubic root of 253328209 is about 632.7437308421.

The spelling of 253328209 in words is "two hundred fifty-three million, three hundred twenty-eight thousand, two hundred nine".