2285509 has 2 divisors, whose sum is σ = 2285510. Its totient is φ = 2285508.

The previous prime is 2285489. The next prime is 2285513. The reversal of 2285509 is 9055822.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2160900 + 124609 = 1470^2 + 353^2 .

It is a cyclic number.

It is not a de Polignac number, because 2285509 - 2⁵ = 2285477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2282509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1142754 + 1142755.

It is an arithmetic number, because the mean of its divisors is an integer number (1142755).

2^2285509 is an apocalyptic number.

It is an amenable number.

2285509 is a deficient number, since it is larger than the sum of its proper divisors (1).

2285509 is an equidigital number, since it uses as much as digits as its factorization.

2285509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7200, while the sum is 31.

The square root of 2285509 is about 1511.7899986440. The cubic root of 2285509 is about 131.7228075140.

The spelling of 2285509 in words is "two million, two hundred eighty-five thousand, five hundred nine".