111617543 has 2 divisors, whose sum is σ = 111617544. Its totient is φ = 111617542.

The previous prime is 111617537. The next prime is 111617573. The reversal of 111617543 is 345716111.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 111617543 - 2⁸ = 111617287 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111617573) 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 as a sum of consecutive naturals, namely, 55808771 + 55808772.

It is an arithmetic number, because the mean of its divisors is an integer number (55808772).

Almost surely, 2^111617543 is an apocalyptic number.

111617543 is a deficient number, since it is larger than the sum of its proper divisors (1).

111617543 is an equidigital number, since it uses as much as digits as its factorization.

111617543 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2520, while the sum is 29.

The square root of 111617543 is about 10564.9203972392. The cubic root of 111617543 is about 481.4791510494.

The spelling of 111617543 in words is "one hundred eleven million, six hundred seventeen thousand, five hundred forty-three".