117775291 has 2 divisors, whose sum is σ = 117775292. Its totient is φ = 117775290.

The previous prime is 117775289. The next prime is 117775309. The reversal of 117775291 is 192577711.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 117775291 - 2¹ = 117775289 is a prime.

Together with 117775289, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (117775241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58887645 + 58887646.

It is an arithmetic number, because the mean of its divisors is an integer number (58887646).

Almost surely, 2^117775291 is an apocalyptic number.

117775291 is a deficient number, since it is larger than the sum of its proper divisors (1).

117775291 is an equidigital number, since it uses as much as digits as its factorization.

117775291 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 30870, while the sum is 40.

The square root of 117775291 is about 10852.4324923033. The cubic root of 117775291 is about 490.1752684127.

The spelling of 117775291 in words is "one hundred seventeen million, seven hundred seventy-five thousand, two hundred ninety-one".