22224445 has 8 divisors (see below), whose sum is σ = 26824536. Its totient is φ = 17676096.

The previous prime is 22224443. The next prime is 22224481. The reversal of 22224445 is 54442222.

22224445 = 3333² + 3334².

It can be written as a sum of positive squares in 4 ways, for example, as 11108889 + 11115556 = 3333^2 + 3334^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22224445 - 2¹ = 22224443 is a prime.

It is a Duffinian number.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22224443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11982 + ... + 13711.

It is an arithmetic number, because the mean of its divisors is an integer number (3353067).

Almost surely, 2^22224445 is an apocalyptic number.

22224445 is the 3334-th centered square number.

It is an amenable number.

22224445 is a deficient number, since it is larger than the sum of its proper divisors (4600091).

22224445 is a wasteful number, since it uses less digits than its factorization.

22224445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25871.

The product of its digits is 5120, while the sum is 25.

The square root of 22224445 is about 4714.2809632011. The cubic root of 22224445 is about 281.1535952717.

Adding to 22224445 its reverse (54442222), we get a palindrome (76666667).

It can be divided in two parts, 2222 and 4445, that multiplied together give a triangular number (9876790 = T₄₄₄₄).

The spelling of 22224445 in words is "twenty-two million, two hundred twenty-four thousand, four hundred forty-five".