144444253 has 4 divisors (see below), whose sum is σ = 144666108. Its totient is φ = 144222400.

The previous prime is 144444211. The next prime is 144444299. The reversal of 144444253 is 352444441.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 352444441 = 193 ⋅1826137.

It can be written as a sum of positive squares in 2 ways, for example, as 64931364 + 79512889 = 8058^2 + 8917^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-144444253 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144444203) 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, 109948 + ... + 111253.

It is an arithmetic number, because the mean of its divisors is an integer number (36166527).

Almost surely, 2^144444253 is an apocalyptic number.

It is an amenable number.

144444253 is a deficient number, since it is larger than the sum of its proper divisors (221855).

144444253 is an equidigital number, since it uses as much as digits as its factorization.

144444253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221854.

The product of its digits is 30720, while the sum is 31.

The square root of 144444253 is about 12018.4962869737. The cubic root of 144444253 is about 524.6867404064.

Adding to 144444253 its reverse (352444441), we get a palindrome (496888694).

The spelling of 144444253 in words is "one hundred forty-four million, four hundred forty-four thousand, two hundred fifty-three".