44481221 has 16 divisors (see below), whose sum is σ = 47044800. Its totient is φ = 42016128.

The previous prime is 44481191. The next prime is 44481253. The reversal of 44481221 is 12218444.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-44481221 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44481421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 225695 + ... + 225891.

It is an arithmetic number, because the mean of its divisors is an integer number (2940300).

Almost surely, 2^44481221 is an apocalyptic number.

It is an amenable number.

44481221 is a deficient number, since it is larger than the sum of its proper divisors (2563579).

44481221 is a wasteful number, since it uses less digits than its factorization.

44481221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 388.

The product of its digits is 2048, while the sum is 26.

The square root of 44481221 is about 6669.4243379770. The cubic root of 44481221 is about 354.3171984294.

Adding to 44481221 its reverse (12218444), we get a palindrome (56699665).

The spelling of 44481221 in words is "forty-four million, four hundred eighty-one thousand, two hundred twenty-one".