144220541 has 2 divisors, whose sum is σ = 144220542. Its totient is φ = 144220540.

The previous prime is 144220529. The next prime is 144220543. The reversal of 144220541 is 145022441.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 133494916 + 10725625 = 11554^2 + 3275^2 .

It is an emirp because it is prime and its reverse (145022441) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 144220541 - 2⁶ = 144220477 is a prime.

Together with 144220543, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (144220543) 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, 72110270 + 72110271.

It is an arithmetic number, because the mean of its divisors is an integer number (72110271).

Almost surely, 2^144220541 is an apocalyptic number.

It is an amenable number.

144220541 is a deficient number, since it is larger than the sum of its proper divisors (1).

144220541 is an equidigital number, since it uses as much as digits as its factorization.

144220541 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1280, while the sum is 23.

The square root of 144220541 is about 12009.1856926271. The cubic root of 144220541 is about 524.4157261162.

Adding to 144220541 its reverse (145022441), we get a palindrome (289242982).

The spelling of 144220541 in words is "one hundred forty-four million, two hundred twenty thousand, five hundred forty-one".