111455543 has 4 divisors (see below), whose sum is σ = 113344680. Its totient is φ = 109566408.

The previous prime is 111455537. The next prime is 111455563. The reversal of 111455543 is 345554111.

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 111455543 - 2¹² = 111451447 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111455563) 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, 944480 + ... + 944597.

It is an arithmetic number, because the mean of its divisors is an integer number (28336170).

Almost surely, 2^111455543 is an apocalyptic number.

111455543 is a deficient number, since it is larger than the sum of its proper divisors (1889137).

111455543 is an equidigital number, since it uses as much as digits as its factorization.

111455543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1889136.

The product of its digits is 6000, while the sum is 29.

The square root of 111455543 is about 10557.2507311326. The cubic root of 111455543 is about 481.2461010985.

The spelling of 111455543 in words is "one hundred eleven million, four hundred fifty-five thousand, five hundred forty-three".