44253221 has 4 divisors (see below), whose sum is σ = 45449292. Its totient is φ = 43057152.

The previous prime is 44253211. The next prime is 44253239. The reversal of 44253221 is 12235244.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 16900321 + 27352900 = 4111^2 + 5230^2 .

It is a cyclic number.

It is not a de Polignac number, because 44253221 - 2¹⁴ = 44236837 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 (44253211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 597980 + ... + 598053.

It is an arithmetic number, because the mean of its divisors is an integer number (11362323).

Almost surely, 2^44253221 is an apocalyptic number.

It is an amenable number.

44253221 is a deficient number, since it is larger than the sum of its proper divisors (1196071).

44253221 is a wasteful number, since it uses less digits than its factorization.

44253221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1196070.

The product of its digits is 1920, while the sum is 23.

The square root of 44253221 is about 6652.3094486050. The cubic root of 44253221 is about 353.7107796546.

Adding to 44253221 its reverse (12235244), we get a palindrome (56488465).

The spelling of 44253221 in words is "forty-four million, two hundred fifty-three thousand, two hundred twenty-one".