111564043 has 4 divisors (see below), whose sum is σ = 112274800. Its totient is φ = 110853288.

The previous prime is 111563989. The next prime is 111564083. The reversal of 111564043 is 340465111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 340465111 = 7 ⋅48637873.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111564043 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111563999 and 111564017.

It is not an unprimeable number, because it can be changed into a prime (111564083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 355143 + ... + 355456.

It is an arithmetic number, because the mean of its divisors is an integer number (28068700).

Almost surely, 2^111564043 is an apocalyptic number.

111564043 is a deficient number, since it is larger than the sum of its proper divisors (710757).

111564043 is an equidigital number, since it uses as much as digits as its factorization.

111564043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 710756.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 111564043 is about 10562.3881295851. The cubic root of 111564043 is about 481.4022119752.

The spelling of 111564043 in words is "one hundred eleven million, five hundred sixty-four thousand, forty-three".