6552209 has 2 divisors, whose sum is σ = 6552210. Its totient is φ = 6552208.

The previous prime is 6552199. The next prime is 6552229. The reversal of 6552209 is 9022556.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6225025 + 327184 = 2495^2 + 572^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6552209 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (6552229) 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, 3276104 + 3276105.

It is an arithmetic number, because the mean of its divisors is an integer number (3276105).

Almost surely, 2^6552209 is an apocalyptic number.

It is an amenable number.

6552209 is a deficient number, since it is larger than the sum of its proper divisors (1).

6552209 is an equidigital number, since it uses as much as digits as its factorization.

6552209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 6552209 is about 2559.7283058950. The cubic root of 6552209 is about 187.1238943717.

The spelling of 6552209 in words is "six million, five hundred fifty-two thousand, two hundred nine".