5220566209 has 2 divisors, whose sum is σ = 5220566210. Its totient is φ = 5220566208.

The previous prime is 5220566189. The next prime is 5220566257. The reversal of 5220566209 is 9026650225.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5184000000 + 36566209 = 72000^2 + 6047^2 .

It is a cyclic number.

It is not a de Polignac number, because 5220566209 - 2⁵ = 5220566177 is a prime.

It is not a weakly prime, because it can be changed into another prime (5220566279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2610283104 + 2610283105.

It is an arithmetic number, because the mean of its divisors is an integer number (2610283105).

Almost surely, 2^5220566209 is an apocalyptic number.

It is an amenable number.

5220566209 is a deficient number, since it is larger than the sum of its proper divisors (1).

5220566209 is an equidigital number, since it uses as much as digits as its factorization.

5220566209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64800, while the sum is 37.

The square root of 5220566209 is about 72253.4857913444. The cubic root of 5220566209 is about 1734.7592131526.

The spelling of 5220566209 in words is "five billion, two hundred twenty million, five hundred sixty-six thousand, two hundred nine".