544442221 has 8 divisors (see below), whose sum is σ = 589875264. Its totient is φ = 500498880.

The previous prime is 544442209. The next prime is 544442231. The reversal of 544442221 is 122244445.

544442221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 544442221 - 2¹¹ = 544440173 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 544442221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (544442231) 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, 371665 + ... + 373126.

It is an arithmetic number, because the mean of its divisors is an integer number (73734408).

Almost surely, 2^544442221 is an apocalyptic number.

It is an amenable number.

544442221 is a deficient number, since it is larger than the sum of its proper divisors (45433043).

544442221 is a wasteful number, since it uses less digits than its factorization.

544442221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 744851.

The product of its digits is 10240, while the sum is 28.

The square root of 544442221 is about 23333.2856880466. The cubic root of 544442221 is about 816.5521606684.

Adding to 544442221 its reverse (122244445), we get a palindrome (666686666).

It can be divided in two parts, 54444 and 2221, that added together give a palindrome (56665).

The spelling of 544442221 in words is "five hundred forty-four million, four hundred forty-two thousand, two hundred twenty-one".