5001809 has 2 divisors, whose sum is σ = 5001810. Its totient is φ = 5001808.

The previous prime is 5001779. The next prime is 5001907. The reversal of 5001809 is 9081005.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3888784 + 1113025 = 1972^2 + 1055^2 .

It is a cyclic number.

It is not a de Polignac number, because 5001809 - 2²⁰ = 3953233 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (5003809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2500904 + 2500905.

It is an arithmetic number, because the mean of its divisors is an integer number (2500905).

Almost surely, 2^5001809 is an apocalyptic number.

It is an amenable number.

5001809 is a deficient number, since it is larger than the sum of its proper divisors (1).

5001809 is an equidigital number, since it uses as much as digits as its factorization.

5001809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 360, while the sum is 23.

The square root of 5001809 is about 2236.4724456161. The cubic root of 5001809 is about 171.0182144910.

The spelling of 5001809 in words is "five million, one thousand, eight hundred nine".