111544441 has 4 divisors (see below), whose sum is σ = 112358772. Its totient is φ = 110730112.

The previous prime is 111544427. The next prime is 111544453. The reversal of 111544441 is 144445111.

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 37515625 + 74028816 = 6125^2 + 8604^2 .

It is a cyclic number.

It is not a de Polignac number, because 111544441 - 2¹¹ = 111542393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111544841) 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, 406960 + ... + 407233.

It is an arithmetic number, because the mean of its divisors is an integer number (28089693).

Almost surely, 2^111544441 is an apocalyptic number.

It is an amenable number.

111544441 is a deficient number, since it is larger than the sum of its proper divisors (814331).

111544441 is an equidigital number, since it uses as much as digits as its factorization.

111544441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 814330.

The product of its digits is 1280, while the sum is 25.

The square root of 111544441 is about 10561.4601736692. The cubic root of 111544441 is about 481.3740159166.

Adding to 111544441 its reverse (144445111), we get a palindrome (255989552).

The spelling of 111544441 in words is "one hundred eleven million, five hundred forty-four thousand, four hundred forty-one".