117015817 has 2 divisors, whose sum is σ = 117015818. Its totient is φ = 117015816.

The previous prime is 117015799. The next prime is 117015839. The reversal of 117015817 is 718510711.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 114468601 + 2547216 = 10699^2 + 1596^2 .

It is an emirp because it is prime and its reverse (718510711) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-117015817 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (117015887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58507908 + 58507909.

It is an arithmetic number, because the mean of its divisors is an integer number (58507909).

Almost surely, 2^117015817 is an apocalyptic number.

It is an amenable number.

117015817 is a deficient number, since it is larger than the sum of its proper divisors (1).

117015817 is an equidigital number, since it uses as much as digits as its factorization.

117015817 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1960, while the sum is 31.

The square root of 117015817 is about 10817.3849427669. The cubic root of 117015817 is about 489.1193636930.

The spelling of 117015817 in words is "one hundred seventeen million, fifteen thousand, eight hundred seventeen".