111159589 has 2 divisors, whose sum is σ = 111159590. Its totient is φ = 111159588.

The previous prime is 111159571. The next prime is 111159613. The reversal of 111159589 is 985951111.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 66830625 + 44328964 = 8175^2 + 6658^2 .

It is an emirp because it is prime and its reverse (985951111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 111159589 - 2¹⁷ = 111028517 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 (111159539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55579794 + 55579795.

It is an arithmetic number, because the mean of its divisors is an integer number (55579795).

Almost surely, 2^111159589 is an apocalyptic number.

It is an amenable number.

111159589 is a deficient number, since it is larger than the sum of its proper divisors (1).

111159589 is an equidigital number, since it uses as much as digits as its factorization.

111159589 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16200, while the sum is 40.

The square root of 111159589 is about 10543.2247913056. The cubic root of 111159589 is about 480.8197638177.

The spelling of 111159589 in words is "one hundred eleven million, one hundred fifty-nine thousand, five hundred eighty-nine".