111548089 has 2 divisors, whose sum is σ = 111548090. Its totient is φ = 111548088.

The previous prime is 111548071. The next prime is 111548117. The reversal of 111548089 is 980845111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 106440489 + 5107600 = 10317^2 + 2260^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111548089 is a prime.

It is not a weakly prime, because it can be changed into another prime (111548039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55774044 + 55774045.

It is an arithmetic number, because the mean of its divisors is an integer number (55774045).

Almost surely, 2^111548089 is an apocalyptic number.

It is an amenable number.

111548089 is a deficient number, since it is larger than the sum of its proper divisors (1).

111548089 is an equidigital number, since it uses as much as digits as its factorization.

111548089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11520, while the sum is 37.

The square root of 111548089 is about 10561.6328756495. The cubic root of 111548089 is about 481.3792635508.

The spelling of 111548089 in words is "one hundred eleven million, five hundred forty-eight thousand, eighty-nine".