5201223509 has 2 divisors, whose sum is σ = 5201223510. Its totient is φ = 5201223508.

The previous prime is 5201223497. The next prime is 5201223589. The reversal of 5201223509 is 9053221025.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5080553284 + 120670225 = 71278^2 + 10985^2 .

It is a cyclic number.

It is not a de Polignac number, because 5201223509 - 2²⁸ = 4932788053 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5201223589) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2600611754 + 2600611755.

It is an arithmetic number, because the mean of its divisors is an integer number (2600611755).

Almost surely, 2^5201223509 is an apocalyptic number.

It is an amenable number.

5201223509 is a deficient number, since it is larger than the sum of its proper divisors (1).

5201223509 is an equidigital number, since it uses as much as digits as its factorization.

5201223509 is an evil number, because the sum of its binary digits is even.

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

The square root of 5201223509 is about 72119.5085188467. The cubic root of 5201223509 is about 1732.6140784034.

The spelling of 5201223509 in words is "five billion, two hundred one million, two hundred twenty-three thousand, five hundred nine".