111540017 has 2 divisors, whose sum is σ = 111540018. Its totient is φ = 111540016.

The previous prime is 111540007. The next prime is 111540019. The reversal of 111540017 is 710045111.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 65788321 + 45751696 = 8111^2 + 6764^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111540017 is a prime.

Together with 111540019, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (111540019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55770008 + 55770009.

It is an arithmetic number, because the mean of its divisors is an integer number (55770009).

Almost surely, 2^111540017 is an apocalyptic number.

It is an amenable number.

111540017 is a deficient number, since it is larger than the sum of its proper divisors (1).

111540017 is an equidigital number, since it uses as much as digits as its factorization.

111540017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 140, while the sum is 20.

The square root of 111540017 is about 10561.2507308557. The cubic root of 111540017 is about 481.3676518558.

Adding to 111540017 its reverse (710045111), we get a palindrome (821585128).

The spelling of 111540017 in words is "one hundred eleven million, five hundred forty thousand, seventeen".