144111545 has 4 divisors (see below), whose sum is σ = 172933860. Its totient is φ = 115289232.

The previous prime is 144111521. The next prime is 144111551. The reversal of 144111545 is 545111441.

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 105124009 + 38987536 = 10253^2 + 6244^2 .

It is a cyclic number.

It is not a de Polignac number, because 144111545 - 2¹⁸ = 143849401 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14411150 + ... + 14411159.

It is an arithmetic number, because the mean of its divisors is an integer number (43233465).

Almost surely, 2^144111545 is an apocalyptic number.

It is an amenable number.

144111545 is a deficient number, since it is larger than the sum of its proper divisors (28822315).

144111545 is an equidigital number, since it uses as much as digits as its factorization.

144111545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28822314.

The product of its digits is 1600, while the sum is 26.

The square root of 144111545 is about 12004.6468086321. The cubic root of 144111545 is about 524.2835821519.

Adding to 144111545 its reverse (545111441), we get a palindrome (689222986).

The spelling of 144111545 in words is "one hundred forty-four million, one hundred eleven thousand, five hundred forty-five".