111564143 has 4 divisors (see below), whose sum is σ = 117435960. Its totient is φ = 105692328.

The previous prime is 111564137. The next prime is 111564223. The reversal of 111564143 is 341465111.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 111564143 - 2¹⁰ = 111563119 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111563143) 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, 2935880 + ... + 2935917.

It is an arithmetic number, because the mean of its divisors is an integer number (29358990).

Almost surely, 2^111564143 is an apocalyptic number.

111564143 is a deficient number, since it is larger than the sum of its proper divisors (5871817).

111564143 is an equidigital number, since it uses as much as digits as its factorization.

111564143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5871816.

The product of its digits is 1440, while the sum is 26.

The square root of 111564143 is about 10562.3928633620. The cubic root of 111564143 is about 481.4023558095.

The spelling of 111564143 in words is "one hundred eleven million, five hundred sixty-four thousand, one hundred forty-three".