2241809 has 2 divisors, whose sum is σ = 2241810. Its totient is φ = 2241808.

The previous prime is 2241797. The next prime is 2241851. The reversal of 2241809 is 9081422.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1380625 + 861184 = 1175^2 + 928^2 .

It is a cyclic number.

It is not a de Polignac number, because 2241809 - 2⁸ = 2241553 is a prime.

It is not a weakly prime, because it can be changed into another prime (2241209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1120904 + 1120905.

It is an arithmetic number, because the mean of its divisors is an integer number (1120905).

2^2241809 is an apocalyptic number.

It is an amenable number.

2241809 is a deficient number, since it is larger than the sum of its proper divisors (1).

2241809 is an equidigital number, since it uses as much as digits as its factorization.

2241809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 2241809 is about 1497.2671772266. The cubic root of 2241809 is about 130.8778653048.

The spelling of 2241809 in words is "two million, two hundred forty-one thousand, eight hundred nine".