5805509 has 2 divisors, whose sum is σ = 5805510. Its totient is φ = 5805508.

The previous prime is 5805493. The next prime is 5805511. The reversal of 5805509 is 9055085.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5189284 + 616225 = 2278^2 + 785^2 .

It is a cyclic number.

It is not a de Polignac number, because 5805509 - 2⁴ = 5805493 is a prime.

Together with 5805511, 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 (5805529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2902754 + 2902755.

It is an arithmetic number, because the mean of its divisors is an integer number (2902755).

Almost surely, 2^5805509 is an apocalyptic number.

It is an amenable number.

5805509 is a deficient number, since it is larger than the sum of its proper divisors (1).

5805509 is an equidigital number, since it uses as much as digits as its factorization.

5805509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9000, while the sum is 32.

The square root of 5805509 is about 2409.4623881688. The cubic root of 5805509 is about 179.7270451439.

The spelling of 5805509 in words is "five million, eight hundred five thousand, five hundred nine".