117824081 has 2 divisors, whose sum is σ = 117824082. Its totient is φ = 117824080.

The previous prime is 117824041. The next prime is 117824089. The reversal of 117824081 is 180428711.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 108576400 + 9247681 = 10420^2 + 3041^2 .

It is a cyclic number.

It is not a de Polignac number, because 117824081 - 2⁶ = 117824017 is a prime.

It is a super-2 number, since 2×117824081² = 27765028126989122, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (117824089) 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, 58912040 + 58912041.

It is an arithmetic number, because the mean of its divisors is an integer number (58912041).

Almost surely, 2^117824081 is an apocalyptic number.

It is an amenable number.

117824081 is a deficient number, since it is larger than the sum of its proper divisors (1).

117824081 is an equidigital number, since it uses as much as digits as its factorization.

117824081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3584, while the sum is 32.

The square root of 117824081 is about 10854.6801426850. The cubic root of 117824081 is about 490.2429463029.

The spelling of 117824081 in words is "one hundred seventeen million, eight hundred twenty-four thousand, eighty-one".