2245209 has 16 divisors (see below), whose sum is σ = 3136320. Its totient is φ = 1426880.

The previous prime is 2245189. The next prime is 2245223. The reversal of 2245209 is 9025422.

It is a cyclic number.

It is not a de Polignac number, because 2245209 - 2⁸ = 2244953 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2245289) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11299 + ... + 11495.

It is an arithmetic number, because the mean of its divisors is an integer number (196020).

2^2245209 is an apocalyptic number.

2245209 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

2245209 is a deficient number, since it is larger than the sum of its proper divisors (891111).

2245209 is a wasteful number, since it uses less digits than its factorization.

2245209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 360.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 2245209 is about 1498.4021489573. The cubic root of 2245209 is about 130.9439964177.

The spelling of 2245209 in words is "two million, two hundred forty-five thousand, two hundred nine".