1115520317 has 2 divisors, whose sum is σ = 1115520318. Its totient is φ = 1115520316.

The previous prime is 1115520313. The next prime is 1115520323. The reversal of 1115520317 is 7130255111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 730026361 + 385493956 = 27019^2 + 19634^2 .

It is a cyclic number.

It is not a de Polignac number, because 1115520317 - 2² = 1115520313 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1115520313) 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 as a sum of consecutive naturals, namely, 557760158 + 557760159.

It is an arithmetic number, because the mean of its divisors is an integer number (557760159).

Almost surely, 2^1115520317 is an apocalyptic number.

It is an amenable number.

1115520317 is a deficient number, since it is larger than the sum of its proper divisors (1).

1115520317 is an equidigital number, since it uses as much as digits as its factorization.

1115520317 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1050, while the sum is 26.

The square root of 1115520317 is about 33399.4059378307. The cubic root of 1115520317 is about 1037.1124031821.

Adding to 1115520317 its reverse (7130255111), we get a palindrome (8245775428).

The spelling of 1115520317 in words is "one billion, one hundred fifteen million, five hundred twenty thousand, three hundred seventeen".