144444553 has 8 divisors (see below), whose sum is σ = 158581440. Its totient is φ = 130475280.

The previous prime is 144444551. The next prime is 144444581. The reversal of 144444553 is 355444441.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 144444553 - 2¹ = 144444551 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (144444551) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40093 + ... + 43546.

It is an arithmetic number, because the mean of its divisors is an integer number (19822680).

Almost surely, 2^144444553 is an apocalyptic number.

It is an amenable number.

144444553 is a deficient number, since it is larger than the sum of its proper divisors (14136887).

144444553 is a wasteful number, since it uses less digits than its factorization.

144444553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83807.

The product of its digits is 76800, while the sum is 34.

The square root of 144444553 is about 12018.5087677299. The cubic root of 144444553 is about 524.6871036513.

Adding to 144444553 its reverse (355444441), we get a palindrome (499888994).

The spelling of 144444553 in words is "one hundred forty-four million, four hundred forty-four thousand, five hundred fifty-three".