44022281 has 2 divisors, whose sum is σ = 44022282. Its totient is φ = 44022280.

The previous prime is 44022271. The next prime is 44022311. The reversal of 44022281 is 18222044.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39438400 + 4583881 = 6280^2 + 2141^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-44022281 is a prime.

It is a super-2 number, since 2×44022281² = 3875922448885922, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (44022241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22011140 + 22011141.

It is an arithmetic number, because the mean of its divisors is an integer number (22011141).

Almost surely, 2^44022281 is an apocalyptic number.

It is an amenable number.

44022281 is a deficient number, since it is larger than the sum of its proper divisors (1).

44022281 is an equidigital number, since it uses as much as digits as its factorization.

44022281 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1024, while the sum is 23.

The square root of 44022281 is about 6634.9288617136. The cubic root of 44022281 is about 353.0944141520.

The spelling of 44022281 in words is "forty-four million, twenty-two thousand, two hundred eighty-one".