144252217 has 2 divisors, whose sum is σ = 144252218. Its totient is φ = 144252216.

The previous prime is 144252197. The next prime is 144252223. The reversal of 144252217 is 712252441.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 122124601 + 22127616 = 11051^2 + 4704^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-144252217 is a prime.

It is not a weakly prime, because it can be changed into another prime (144202217) 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, 72126108 + 72126109.

It is an arithmetic number, because the mean of its divisors is an integer number (72126109).

Almost surely, 2^144252217 is an apocalyptic number.

It is an amenable number.

144252217 is a deficient number, since it is larger than the sum of its proper divisors (1).

144252217 is an equidigital number, since it uses as much as digits as its factorization.

144252217 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4480, while the sum is 28.

The square root of 144252217 is about 12010.5044440273. The cubic root of 144252217 is about 524.4541168022.

The spelling of 144252217 in words is "one hundred forty-four million, two hundred fifty-two thousand, two hundred seventeen".