111045 has 16 divisors (see below), whose sum is σ = 194112. Its totient is φ = 53760.

The previous prime is 111043. The next prime is 111049. The reversal of 111045 is 540111.

111045 = T₁₄₄ + T₁₄₅ + ... + T₁₅₃.

It is a happy number.

It is not a de Polignac number, because 111045 - 2¹ = 111043 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 111045.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111043) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 172 + ... + 501.

It is an arithmetic number, because the mean of its divisors is an integer number (12132).

2¹¹¹⁰⁴⁵ is an apocalyptic number.

111045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

111045 is a deficient number, since it is larger than the sum of its proper divisors (83067).

111045 is a wasteful number, since it uses less digits than its factorization.

111045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 692.

The product of its (nonzero) digits is 20, while the sum is 12.

The square root of 111045 is about 333.2341519112. The cubic root of 111045 is about 48.0654489130.

Adding to 111045 its reverse (540111), we get a palindrome (651156).

The spelling of 111045 in words is "one hundred eleven thousand, forty-five".