111253543 has 4 divisors (see below), whose sum is σ = 111291840. Its totient is φ = 111215248.

The previous prime is 111253529. The next prime is 111253609. The reversal of 111253543 is 345352111.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111253543 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 (111253343) 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, 14398 + ... + 20731.

It is an arithmetic number, because the mean of its divisors is an integer number (27822960).

Almost surely, 2^111253543 is an apocalyptic number.

111253543 is a deficient number, since it is larger than the sum of its proper divisors (38297).

111253543 is an equidigital number, since it uses as much as digits as its factorization.

111253543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38296.

The product of its digits is 1800, while the sum is 25.

The square root of 111253543 is about 10547.6795078349. The cubic root of 111253543 is about 480.9551913861.

The spelling of 111253543 in words is "one hundred eleven million, two hundred fifty-three thousand, five hundred forty-three".