2224445 has 18 divisors (see below), whose sum is σ = 2889978. Its totient is φ = 1643488.

The previous prime is 2224441. The next prime is 2224447. The reversal of 2224445 is 5444222.

It can be written as a sum of positive squares in 3 ways, for example, as 256036 + 1968409 = 506^2 + 1403^2 .

It is not a de Polignac number, because 2224445 - 2² = 2224441 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a d-powerful number, because it can be written as 2¹³ + 2¹⁵ + 2²¹ + 4² + 4⁶ + 4⁶ + 5⁷ .

It is a Duffinian number.

It is a plaindrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 2224445.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2224441) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 76691 + ... + 76719.

2^2224445 is an apocalyptic number.

It is an amenable number.

2224445 is a deficient number, since it is larger than the sum of its proper divisors (665533).

2224445 is an equidigital number, since it uses as much as digits as its factorization.

2224445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109 (or 57 counting only the distinct ones).

The product of its digits is 2560, while the sum is 23.

The square root of 2224445 is about 1491.4573409924. The cubic root of 2224445 is about 130.5390829442.

Adding to 2224445 its reverse (5444222), we get a palindrome (7668667).

The spelling of 2224445 in words is "two million, two hundred twenty-four thousand, four hundred forty-five".