5204209 has 2 divisors, whose sum is σ = 5204210. Its totient is φ = 5204208.

The previous prime is 5204207. The next prime is 5204231. The reversal of 5204209 is 9024025.

It is a happy number.

It is an a-pointer prime, because the next prime (5204231) can be obtained adding 5204209 to its sum of digits (22).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5130225 + 73984 = 2265^2 + 272^2 .

It is a cyclic number.

It is not a de Polignac number, because 5204209 - 2¹ = 5204207 is a prime.

Together with 5204207, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 5204209.

It is not a weakly prime, because it can be changed into another prime (5204207) 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, 2602104 + 2602105.

It is an arithmetic number, because the mean of its divisors is an integer number (2602105).

Almost surely, 2^5204209 is an apocalyptic number.

It is an amenable number.

5204209 is a deficient number, since it is larger than the sum of its proper divisors (1).

5204209 is an equidigital number, since it uses as much as digits as its factorization.

5204209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 5204209 is about 2281.2735478237. The cubic root of 5204209 is about 173.2945520569.

The spelling of 5204209 in words is "five million, two hundred four thousand, two hundred nine".