5166209 has 2 divisors, whose sum is σ = 5166210. Its totient is φ = 5166208.

The previous prime is 5166197. The next prime is 5166211. The reversal of 5166209 is 9026615.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5161984 + 4225 = 2272^2 + 65^2 .

It is a cyclic number.

It is not a de Polignac number, because 5166209 - 2¹⁶ = 5100673 is a prime.

Together with 5166211, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (5166289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2583104 + 2583105.

It is an arithmetic number, because the mean of its divisors is an integer number (2583105).

Almost surely, 2^5166209 is an apocalyptic number.

It is an amenable number.

5166209 is a deficient number, since it is larger than the sum of its proper divisors (1).

5166209 is an equidigital number, since it uses as much as digits as its factorization.

5166209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 5166209 is about 2272.9296073570. The cubic root of 5166209 is about 172.8717349233.

The spelling of 5166209 in words is "five million, one hundred sixty-six thousand, two hundred nine".