144145544 has 16 divisors (see below), whose sum is σ = 279593100. Its totient is φ = 69587392.

The previous prime is 144145543. The next prime is 144145559. The reversal of 144145544 is 445541441.

It can be written as a sum of positive squares in 2 ways, for example, as 135443044 + 8702500 = 11638^2 + 2950^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 144145544.

It is not an unprimeable number, because it can be changed into a prime (144145541) 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 in 3 ways as a sum of consecutive naturals, for example, 310427 + ... + 310890.

Almost surely, 2^144145544 is an apocalyptic number.

It is an amenable number.

144145544 is a deficient number, since it is larger than the sum of its proper divisors (135447556).

144145544 is a wasteful number, since it uses less digits than its factorization.

144145544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 621352 (or 621348 counting only the distinct ones).

The product of its digits is 25600, while the sum is 32.

The square root of 144145544 is about 12006.0628017681. The cubic root of 144145544 is about 524.3248088186.

Adding to 144145544 its reverse (445541441), we get a palindrome (589686985).

The spelling of 144145544 in words is "one hundred forty-four million, one hundred forty-five thousand, five hundred forty-four".