44105221 has 8 divisors (see below), whose sum is σ = 45767960. Its totient is φ = 42467328.

The previous prime is 44105203. The next prime is 44105231. The reversal of 44105221 is 12250144.

It can be written as a sum of positive squares in 4 ways, for example, as 20930625 + 23174596 = 4575^2 + 4814^2 .

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

It is a 10-Lehmer number, since φ(44105221) divides (44105221-1)¹⁰.

It is a cyclic number.

It is not a de Polignac number, because 44105221 - 2⁵ = 44105189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44105231) 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, 2556 + ... + 9733.

It is an arithmetic number, because the mean of its divisors is an integer number (5720995).

Almost surely, 2^44105221 is an apocalyptic number.

It is an amenable number.

44105221 is a deficient number, since it is larger than the sum of its proper divisors (1662739).

44105221 is a wasteful number, since it uses less digits than its factorization.

44105221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12423.

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 44105221 is about 6641.1761759496. The cubic root of 44105221 is about 353.3160237357.

Adding to 44105221 its reverse (12250144), we get a palindrome (56355365).

The spelling of 44105221 in words is "forty-four million, one hundred five thousand, two hundred twenty-one".