2205289 has 4 divisors (see below), whose sum is σ = 2221524. Its totient is φ = 2189056.

The previous prime is 2205283. The next prime is 2205293. The reversal of 2205289 is 9825022.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9825022 = 2 ⋅4912511.

It can be written as a sum of positive squares in 2 ways, for example, as 1283689 + 921600 = 1133^2 + 960^2 .

It is a cyclic number.

It is not a de Polignac number, because 2205289 - 2¹⁷ = 2074217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2205283) 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, 7912 + ... + 8185.

It is an arithmetic number, because the mean of its divisors is an integer number (555381).

2^2205289 is an apocalyptic number.

It is an amenable number.

2205289 is a deficient number, since it is larger than the sum of its proper divisors (16235).

2205289 is a wasteful number, since it uses less digits than its factorization.

2205289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16234.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 2205289 is about 1485.0215486652. The cubic root of 2205289 is about 130.1632859438.

The spelling of 2205289 in words is "two million, two hundred five thousand, two hundred eighty-nine".