2204245 has 4 divisors (see below), whose sum is σ = 2645100. Its totient is φ = 1763392.

The previous prime is 2204243. The next prime is 2204269. The reversal of 2204245 is 5424022.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5424022 = 2 ⋅2712011.

It can be written as a sum of positive squares in 2 ways, for example, as 669124 + 1535121 = 818^2 + 1239^2 .

It is a cyclic number.

It is not a de Polignac number, because 2204245 - 2¹ = 2204243 is a prime.

2204245 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2204243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 220420 + ... + 220429.

It is an arithmetic number, because the mean of its divisors is an integer number (661275).

2^2204245 is an apocalyptic number.

It is an amenable number.

2204245 is a deficient number, since it is larger than the sum of its proper divisors (440855).

2204245 is an equidigital number, since it uses as much as digits as its factorization.

2204245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 440854.

The product of its (nonzero) digits is 640, while the sum is 19.

The square root of 2204245 is about 1484.6699970027. The cubic root of 2204245 is about 130.1427426167.

Adding to 2204245 its reverse (5424022), we get a palindrome (7628267).

It can be divided in two parts, 220 and 4245, that added together give a triangular number (4465 = T₉₄).

The spelling of 2204245 in words is "two million, two hundred four thousand, two hundred forty-five".