144521147 has 2 divisors, whose sum is σ = 144521148. Its totient is φ = 144521146.

The previous prime is 144521129. The next prime is 144521183. The reversal of 144521147 is 741125441.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-144521147 is a prime.

It is not a weakly prime, because it can be changed into another prime (144521107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72260573 + 72260574.

It is an arithmetic number, because the mean of its divisors is an integer number (72260574).

Almost surely, 2^144521147 is an apocalyptic number.

144521147 is a deficient number, since it is larger than the sum of its proper divisors (1).

144521147 is an equidigital number, since it uses as much as digits as its factorization.

144521147 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4480, while the sum is 29.

The square root of 144521147 is about 12021.6948472335. The cubic root of 144521147 is about 524.7798284647.

Adding to 144521147 its reverse (741125441), we get a palindrome (885646588).

The spelling of 144521147 in words is "one hundred forty-four million, five hundred twenty-one thousand, one hundred forty-seven".