115601111 has 4 divisors (see below), whose sum is σ = 121685400. Its totient is φ = 109516824.

The previous prime is 115601107. The next prime is 115601113. The reversal of 115601111 is 111106511.

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

It is a cyclic number.

It is not a de Polignac number, because 115601111 - 2² = 115601107 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 115601111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115601113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3042116 + ... + 3042153.

It is an arithmetic number, because the mean of its divisors is an integer number (30421350).

Almost surely, 2^115601111 is an apocalyptic number.

115601111 is a deficient number, since it is larger than the sum of its proper divisors (6084289).

115601111 is an equidigital number, since it uses as much as digits as its factorization.

115601111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6084288.

The product of its (nonzero) digits is 30, while the sum is 17.

The square root of 115601111 is about 10751.7957104848. The cubic root of 115601111 is about 487.1402365188.

Adding to 115601111 its reverse (111106511), we get a palindrome (226707622).

The spelling of 115601111 in words is "one hundred fifteen million, six hundred one thousand, one hundred eleven".