52308209 has 2 divisors, whose sum is σ = 52308210. Its totient is φ = 52308208.

The previous prime is 52308163. The next prime is 52308239. The reversal of 52308209 is 90280325.

52308209 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 52200625 + 107584 = 7225^2 + 328^2 .

It is a cyclic number.

It is not a de Polignac number, because 52308209 - 2²⁰ = 51259633 is a prime.

It is a super-2 number, since 2×52308209² = 5472297457575362, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (52308239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26154104 + 26154105.

It is an arithmetic number, because the mean of its divisors is an integer number (26154105).

Almost surely, 2^52308209 is an apocalyptic number.

It is an amenable number.

52308209 is a deficient number, since it is larger than the sum of its proper divisors (1).

52308209 is an equidigital number, since it uses as much as digits as its factorization.

52308209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 52308209 is about 7232.4414273466. The cubic root of 52308209 is about 373.9870952681.

The spelling of 52308209 in words is "fifty-two million, three hundred eight thousand, two hundred nine".