111043445 has 4 divisors (see below), whose sum is σ = 133252140. Its totient is φ = 88834752.

The previous prime is 111043433. The next prime is 111043447. The reversal of 111043445 is 544340111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 544340111 = 7 ⋅77762873.

It can be written as a sum of positive squares in 2 ways, for example, as 57138481 + 53904964 = 7559^2 + 7342^2 .

It is a cyclic number.

It is not a de Polignac number, because 111043445 - 2⁸ = 111043189 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 111043445.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111043447) 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, 11104340 + ... + 11104349.

It is an arithmetic number, because the mean of its divisors is an integer number (33313035).

Almost surely, 2^111043445 is an apocalyptic number.

It is an amenable number.

111043445 is a deficient number, since it is larger than the sum of its proper divisors (22208695).

111043445 is an equidigital number, since it uses as much as digits as its factorization.

111043445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22208694.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 111043445 is about 10537.7153596024. The cubic root of 111043445 is about 480.6522455319.

Adding to 111043445 its reverse (544340111), we get a palindrome (655383556).

The spelling of 111043445 in words is "one hundred eleven million, forty-three thousand, four hundred forty-five".