144811481 has 2 divisors, whose sum is σ = 144811482. Its totient is φ = 144811480.

The previous prime is 144811463. The next prime is 144811489. The reversal of 144811481 is 184118441.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 116985856 + 27825625 = 10816^2 + 5275^2 .

It is a cyclic number.

It is not a de Polignac number, because 144811481 - 2²⁶ = 77702617 is a prime.

It is a super-2 number, since 2×144811481² = 41940730058826722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (144811489) 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, 72405740 + 72405741.

It is an arithmetic number, because the mean of its divisors is an integer number (72405741).

Almost surely, 2^144811481 is an apocalyptic number.

It is an amenable number.

144811481 is a deficient number, since it is larger than the sum of its proper divisors (1).

144811481 is an equidigital number, since it uses as much as digits as its factorization.

144811481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4096, while the sum is 32.

The square root of 144811481 is about 12033.7642074290. The cubic root of 144811481 is about 525.1310100862.

The spelling of 144811481 in words is "one hundred forty-four million, eight hundred eleven thousand, four hundred eighty-one".