144224513 has 4 divisors (see below), whose sum is σ = 150495168. Its totient is φ = 137953860.

The previous prime is 144224491. The next prime is 144224527. The reversal of 144224513 is 315422441.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 144224513 - 2⁶ = 144224449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (144224543) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3135293 + ... + 3135338.

It is an arithmetic number, because the mean of its divisors is an integer number (37623792).

Almost surely, 2^144224513 is an apocalyptic number.

It is an amenable number.

144224513 is a deficient number, since it is larger than the sum of its proper divisors (6270655).

144224513 is an equidigital number, since it uses as much as digits as its factorization.

144224513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6270654.

The product of its digits is 3840, while the sum is 26.

The square root of 144224513 is about 12009.3510648994. The cubic root of 144224513 is about 524.4205404099.

Adding to 144224513 its reverse (315422441), we get a palindrome (459646954).

The spelling of 144224513 in words is "one hundred forty-four million, two hundred twenty-four thousand, five hundred thirteen".