1115512117 has 2 divisors, whose sum is σ = 1115512118. Its totient is φ = 1115512116.

The previous prime is 1115512093. The next prime is 1115512127. The reversal of 1115512117 is 7112155111.

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., 989039601 + 126472516 = 31449^2 + 11246^2 .

It is an emirp because it is prime and its reverse (7112155111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1115512117 - 2⁷ = 1115511989 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1115512091 and 1115512100.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1115512127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 557756058 + 557756059.

It is an arithmetic number, because the mean of its divisors is an integer number (557756059).

Almost surely, 2^1115512117 is an apocalyptic number.

It is an amenable number.

1115512117 is a deficient number, since it is larger than the sum of its proper divisors (1).

1115512117 is an equidigital number, since it uses as much as digits as its factorization.

1115512117 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 350, while the sum is 25.

The square root of 1115512117 is about 33399.2831809307. The cubic root of 1115512117 is about 1037.1098619637.

Adding to 1115512117 its reverse (7112155111), we get a palindrome (8227667228).

The spelling of 1115512117 in words is "one billion, one hundred fifteen million, five hundred twelve thousand, one hundred seventeen".