144443281 has 2 divisors, whose sum is σ = 144443282. Its totient is φ = 144443280.

The previous prime is 144443219. The next prime is 144443293. The reversal of 144443281 is 182344441.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 94867600 + 49575681 = 9740^2 + 7041^2 .

It is a cyclic number.

It is not a de Polignac number, because 144443281 - 2¹⁹ = 143918993 is a prime.

It is a super-2 number, since 2×144443281² = 41727722852089922, which contains 22 as substring.

It is equal to p_8149126 and since 144443281 and 8149126 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (144443081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72221640 + 72221641.

It is an arithmetic number, because the mean of its divisors is an integer number (72221641).

Almost surely, 2^144443281 is an apocalyptic number.

It is an amenable number.

144443281 is a deficient number, since it is larger than the sum of its proper divisors (1).

144443281 is an equidigital number, since it uses as much as digits as its factorization.

144443281 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12288, while the sum is 31.

The square root of 144443281 is about 12018.4558492345. The cubic root of 144443281 is about 524.6855634894.

The spelling of 144443281 in words is "one hundred forty-four million, four hundred forty-three thousand, two hundred eighty-one".