5221309109 has 2 divisors, whose sum is σ = 5221309110. Its totient is φ = 5221309108.

The previous prime is 5221308997. The next prime is 5221309111. The reversal of 5221309109 is 9019031225.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2889385009 + 2331924100 = 53753^2 + 48290^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5221309109 is a prime.

Together with 5221309111, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5221309139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2610654554 + 2610654555.

It is an arithmetic number, because the mean of its divisors is an integer number (2610654555).

Almost surely, 2^5221309109 is an apocalyptic number.

It is an amenable number.

5221309109 is a deficient number, since it is larger than the sum of its proper divisors (1).

5221309109 is an equidigital number, since it uses as much as digits as its factorization.

5221309109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4860, while the sum is 32.

The square root of 5221309109 is about 72258.6265369056. The cubic root of 5221309109 is about 1734.8414961491.

The spelling of 5221309109 in words is "five billion, two hundred twenty-one million, three hundred nine thousand, one hundred nine".