44221481 has 2 divisors, whose sum is σ = 44221482. Its totient is φ = 44221480.

The previous prime is 44221447. The next prime is 44221483. The reversal of 44221481 is 18412244.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23609881 + 20611600 = 4859^2 + 4540^2 .

It is a cyclic number.

It is not a de Polignac number, because 44221481 - 2¹⁸ = 43959337 is a prime.

It is a super-2 number, since 2×44221481² = 3911078763666722, which contains 22 as substring.

Together with 44221483, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 44221481.

It is not a weakly prime, because it can be changed into another prime (44221483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22110740 + 22110741.

It is an arithmetic number, because the mean of its divisors is an integer number (22110741).

Almost surely, 2^44221481 is an apocalyptic number.

It is an amenable number.

44221481 is a deficient number, since it is larger than the sum of its proper divisors (1).

44221481 is an equidigital number, since it uses as much as digits as its factorization.

44221481 is an evil number, because the sum of its binary digits is even.

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

The square root of 44221481 is about 6649.9233830173. The cubic root of 44221481 is about 353.6261947359.

The spelling of 44221481 in words is "forty-four million, two hundred twenty-one thousand, four hundred eighty-one".