111245543 has 2 divisors, whose sum is σ = 111245544. Its totient is φ = 111245542.

The previous prime is 111245539. The next prime is 111245567. The reversal of 111245543 is 345542111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 111245543 - 2² = 111245539 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111245573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55622771 + 55622772.

It is an arithmetic number, because the mean of its divisors is an integer number (55622772).

Almost surely, 2^111245543 is an apocalyptic number.

111245543 is a deficient number, since it is larger than the sum of its proper divisors (1).

111245543 is an equidigital number, since it uses as much as digits as its factorization.

111245543 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2400, while the sum is 26.

The square root of 111245543 is about 10547.3002706854. The cubic root of 111245543 is about 480.9436629629.

Adding to 111245543 its reverse (345542111), we get a palindrome (456787654).

The spelling of 111245543 in words is "one hundred eleven million, two hundred forty-five thousand, five hundred forty-three".