117851597 has 2 divisors, whose sum is σ = 117851598. Its totient is φ = 117851596.

The previous prime is 117851543. The next prime is 117851611. The reversal of 117851597 is 795158711.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 113827561 + 4024036 = 10669^2 + 2006^2 .

It is a cyclic number.

It is not a de Polignac number, because 117851597 - 2⁶ = 117851533 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (117851197) 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, 58925798 + 58925799.

It is an arithmetic number, because the mean of its divisors is an integer number (58925799).

Almost surely, 2^117851597 is an apocalyptic number.

It is an amenable number.

117851597 is a deficient number, since it is larger than the sum of its proper divisors (1).

117851597 is an equidigital number, since it uses as much as digits as its factorization.

117851597 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 88200, while the sum is 44.

The square root of 117851597 is about 10855.9475404038. The cubic root of 117851597 is about 490.2811062298.

The spelling of 117851597 in words is "one hundred seventeen million, eight hundred fifty-one thousand, five hundred ninety-seven".