144303553 has 4 divisors (see below), whose sum is σ = 146280388. Its totient is φ = 142326720.

The previous prime is 144303547. The next prime is 144303563. The reversal of 144303553 is 355303441.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 104714289 + 39589264 = 10233^2 + 6292^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-144303553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (144303503) 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, 988308 + ... + 988453.

It is an arithmetic number, because the mean of its divisors is an integer number (36570097).

Almost surely, 2^144303553 is an apocalyptic number.

It is an amenable number.

144303553 is a deficient number, since it is larger than the sum of its proper divisors (1976835).

144303553 is an equidigital number, since it uses as much as digits as its factorization.

144303553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1976834.

The product of its (nonzero) digits is 10800, while the sum is 28.

The square root of 144303553 is about 12012.6413831430. The cubic root of 144303553 is about 524.5163230868.

Adding to 144303553 its reverse (355303441), we get a palindrome (499606994).

The spelling of 144303553 in words is "one hundred forty-four million, three hundred three thousand, five hundred fifty-three".