144492217 has 2 divisors, whose sum is σ = 144492218. Its totient is φ = 144492216.

The previous prime is 144492203. The next prime is 144492221. The reversal of 144492217 is 712294441.

It is a happy number.

144492217 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 78216336 + 66275881 = 8844^2 + 8141^2 .

It is a cyclic number.

It is not a de Polignac number, because 144492217 - 2¹¹ = 144490169 is a prime.

It is equal to p_8151694 and since 144492217 and 8151694 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (144492247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72246108 + 72246109.

It is an arithmetic number, because the mean of its divisors is an integer number (72246109).

Almost surely, 2^144492217 is an apocalyptic number.

It is an amenable number.

144492217 is a deficient number, since it is larger than the sum of its proper divisors (1).

144492217 is an equidigital number, since it uses as much as digits as its factorization.

144492217 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16128, while the sum is 34.

The square root of 144492217 is about 12020.4915456898. The cubic root of 144492217 is about 524.7448096136.

The spelling of 144492217 in words is "one hundred forty-four million, four hundred ninety-two thousand, two hundred seventeen".