144545209 has 2 divisors, whose sum is σ = 144545210. Its totient is φ = 144545208.

The previous prime is 144545161. The next prime is 144545239. The reversal of 144545209 is 902545441.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 96589584 + 47955625 = 9828^2 + 6925^2 .

It is a cyclic number.

It is not a de Polignac number, because 144545209 - 2¹³ = 144537017 is a prime.

It is not a weakly prime, because it can be changed into another prime (144545239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72272604 + 72272605.

It is an arithmetic number, because the mean of its divisors is an integer number (72272605).

Almost surely, 2^144545209 is an apocalyptic number.

It is an amenable number.

144545209 is a deficient number, since it is larger than the sum of its proper divisors (1).

144545209 is an equidigital number, since it uses as much as digits as its factorization.

144545209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 28800, while the sum is 34.

The square root of 144545209 is about 12022.6955796111. The cubic root of 144545209 is about 524.8089511958.

The spelling of 144545209 in words is "one hundred forty-four million, five hundred forty-five thousand, two hundred nine".