111115573 has 2 divisors, whose sum is σ = 111115574. Its totient is φ = 111115572.

The previous prime is 111115531. The next prime is 111115579. The reversal of 111115573 is 375511111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 83046769 + 28068804 = 9113^2 + 5298^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111115573 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111115579) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55557786 + 55557787.

It is an arithmetic number, because the mean of its divisors is an integer number (55557787).

Almost surely, 2^111115573 is an apocalyptic number.

It is an amenable number.

111115573 is a deficient number, since it is larger than the sum of its proper divisors (1).

111115573 is an equidigital number, since it uses as much as digits as its factorization.

111115573 is an evil number, because the sum of its binary digits is even.

The product of its digits is 525, while the sum is 25.

The square root of 111115573 is about 10541.1371777432. The cubic root of 111115573 is about 480.7562918403.

Adding to 111115573 its reverse (375511111), we get a palindrome (486626684).

The spelling of 111115573 in words is "one hundred eleven million, one hundred fifteen thousand, five hundred seventy-three".