5855209 has 2 divisors, whose sum is σ = 5855210. Its totient is φ = 5855208.

The previous prime is 5855203. The next prime is 5855233. The reversal of 5855209 is 9025585.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4347225 + 1507984 = 2085^2 + 1228^2 .

It is a cyclic number.

It is not a de Polignac number, because 5855209 - 2⁹ = 5854697 is a prime.

5855209 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (5855203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2927604 + 2927605.

It is an arithmetic number, because the mean of its divisors is an integer number (2927605).

Almost surely, 2^5855209 is an apocalyptic number.

It is an amenable number.

5855209 is a deficient number, since it is larger than the sum of its proper divisors (1).

5855209 is an equidigital number, since it uses as much as digits as its factorization.

5855209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18000, while the sum is 34.

The square root of 5855209 is about 2419.7539131077. The cubic root of 5855209 is about 180.2384596750.

The spelling of 5855209 in words is "five million, eight hundred fifty-five thousand, two hundred nine".