144445247 has 2 divisors, whose sum is σ = 144445248. Its totient is φ = 144445246.

The previous prime is 144445207. The next prime is 144445261. The reversal of 144445247 is 742544441.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 144445247 - 2⁶ = 144445183 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (144445207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72222623 + 72222624.

It is an arithmetic number, because the mean of its divisors is an integer number (72222624).

Almost surely, 2^144445247 is an apocalyptic number.

144445247 is a deficient number, since it is larger than the sum of its proper divisors (1).

144445247 is an equidigital number, since it uses as much as digits as its factorization.

144445247 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 71680, while the sum is 35.

The square root of 144445247 is about 12018.5376398296. The cubic root of 144445247 is about 524.6879439559.

Adding to 144445247 its reverse (742544441), we get a palindrome (886989688).

It can be divided in two parts, 14444 and 5247, that added together give a palindrome (19691).

The spelling of 144445247 in words is "one hundred forty-four million, four hundred forty-five thousand, two hundred forty-seven".