2205245 has 12 divisors (see below), whose sum is σ = 3078684. Its totient is φ = 1512000.

The previous prime is 2205239. The next prime is 2205251. The reversal of 2205245 is 5425022.

2205245 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (2205239) and next prime (2205251).

It can be written as a sum of positive squares in 2 ways, for example, as 582169 + 1623076 = 763^2 + 1274^2 .

It is not a de Polignac number, because 2205245 - 2¹⁰ = 2204221 is a prime.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4256 + ... + 4745.

It is an arithmetic number, because the mean of its divisors is an integer number (256557).

2^2205245 is an apocalyptic number.

It is an amenable number.

2205245 is a deficient number, since it is larger than the sum of its proper divisors (873439).

2205245 is an equidigital number, since it uses as much as digits as its factorization.

2205245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9020 (or 9013 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 20.

The square root of 2205245 is about 1485.0067339915. The cubic root of 2205245 is about 130.1624202639.

Subtracting from 2205245 its sum of digits (20), we obtain a square (2205225 = 1485²).

It can be divided in two parts, 2205 and 245, that multiplied together give a square (540225 = 735²).

The spelling of 2205245 in words is "two million, two hundred five thousand, two hundred forty-five".