144007217 has 2 divisors, whose sum is σ = 144007218. Its totient is φ = 144007216.

The previous prime is 144007189. The next prime is 144007223. The reversal of 144007217 is 712700441.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 106172416 + 37834801 = 10304^2 + 6151^2 .

It is a cyclic number.

It is not a de Polignac number, because 144007217 - 2¹² = 144003121 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (144007247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72003608 + 72003609.

It is an arithmetic number, because the mean of its divisors is an integer number (72003609).

Almost surely, 2^144007217 is an apocalyptic number.

It is an amenable number.

144007217 is a deficient number, since it is larger than the sum of its proper divisors (1).

144007217 is an equidigital number, since it uses as much as digits as its factorization.

144007217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1568, while the sum is 26.

The square root of 144007217 is about 12000.3007045657. The cubic root of 144007217 is about 524.1570351264.

Adding to 144007217 its reverse (712700441), we get a palindrome (856707658).

The spelling of 144007217 in words is "one hundred forty-four million, seven thousand, two hundred seventeen".