2204945 has 4 divisors (see below), whose sum is σ = 2645940. Its totient is φ = 1763952.

The previous prime is 2204933. The next prime is 2204953. The reversal of 2204945 is 5494022.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1281424 + 923521 = 1132^2 + 961^2 .

It is a cyclic number.

It is not a de Polignac number, because 2204945 - 2⁴ = 2204929 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 220490 + ... + 220499.

It is an arithmetic number, because the mean of its divisors is an integer number (661485).

2^2204945 is an apocalyptic number.

It is an amenable number.

2204945 is a deficient number, since it is larger than the sum of its proper divisors (440995).

2204945 is an equidigital number, since it uses as much as digits as its factorization.

2204945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 440994.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 2204945 is about 1484.9057209129. The cubic root of 2204945 is about 130.1565175945.

Adding to 2204945 its reverse (5494022), we get a palindrome (7698967).

The spelling of 2204945 in words is "two million, two hundred four thousand, nine hundred forty-five".