111143445 has 32 divisors (see below), whose sum is σ = 213934080. Its totient is φ = 48133440.

The previous prime is 111143411. The next prime is 111143453. The reversal of 111143445 is 544341111.

It is a happy number.

It is not a de Polignac number, because 111143445 - 2⁷ = 111143317 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25861 + ... + 29850.

It is an arithmetic number, because the mean of its divisors is an integer number (6685440).

Almost surely, 2^111143445 is an apocalyptic number.

111143445 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

111143445 is a deficient number, since it is larger than the sum of its proper divisors (102790635).

111143445 is a wasteful number, since it uses less digits than its factorization.

111143445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55745.

The product of its digits is 960, while the sum is 24.

The square root of 111143445 is about 10542.4591533475. The cubic root of 111143445 is about 480.7964857837.

Adding to 111143445 its reverse (544341111), we get a palindrome (655484556).

The spelling of 111143445 in words is "one hundred eleven million, one hundred forty-three thousand, four hundred forty-five".