144455281 has 2 divisors, whose sum is σ = 144455282. Its totient is φ = 144455280.

The previous prime is 144455231. The next prime is 144455291. The reversal of 144455281 is 182554441.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 96845281 + 47610000 = 9841^2 + 6900^2 .

It is a cyclic number.

It is not a de Polignac number, because 144455281 - 2²³ = 136066673 is a prime.

It is a super-2 number, since 2×144455281² = 41734656417577922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (144455221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72227640 + 72227641.

It is an arithmetic number, because the mean of its divisors is an integer number (72227641).

Almost surely, 2^144455281 is an apocalyptic number.

It is an amenable number.

144455281 is a deficient number, since it is larger than the sum of its proper divisors (1).

144455281 is an equidigital number, since it uses as much as digits as its factorization.

144455281 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25600, while the sum is 34.

The square root of 144455281 is about 12018.9550710534. The cubic root of 144455281 is about 524.7000929582.

The spelling of 144455281 in words is "one hundred forty-four million, four hundred fifty-five thousand, two hundred eighty-one".