5164421209 has 2 divisors, whose sum is σ = 5164421210. Its totient is φ = 5164421208.

The previous prime is 5164421201. The next prime is 5164421243. The reversal of 5164421209 is 9021244615.

It is an a-pointer prime, because the next prime (5164421243) can be obtained adding 5164421209 to its sum of digits (34).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4697731600 + 466689609 = 68540^2 + 21603^2 .

It is a cyclic number.

It is not a de Polignac number, because 5164421209 - 2³ = 5164421201 is a prime.

It is not a weakly prime, because it can be changed into another prime (5164421201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2582210604 + 2582210605.

It is an arithmetic number, because the mean of its divisors is an integer number (2582210605).

Almost surely, 2^5164421209 is an apocalyptic number.

It is an amenable number.

5164421209 is a deficient number, since it is larger than the sum of its proper divisors (1).

5164421209 is an equidigital number, since it uses as much as digits as its factorization.

5164421209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 5164421209 is about 71863.9075544880. The cubic root of 5164421209 is about 1728.5179159612.

The spelling of 5164421209 in words is "five billion, one hundred sixty-four million, four hundred twenty-one thousand, two hundred nine".