117855165 has 8 divisors (see below), whose sum is σ = 188568288. Its totient is φ = 62856080.

The previous prime is 117855139. The next prime is 117855167. The reversal of 117855165 is 561558711.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 117855165 - 2⁸ = 117854909 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117855167) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3928491 + ... + 3928520.

It is an arithmetic number, because the mean of its divisors is an integer number (23571036).

Almost surely, 2^117855165 is an apocalyptic number.

117855165 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

117855165 is a deficient number, since it is larger than the sum of its proper divisors (70713123).

117855165 is an equidigital number, since it uses as much as digits as its factorization.

117855165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7857019.

The product of its digits is 42000, while the sum is 39.

The square root of 117855165 is about 10856.1118730418. Note that the first 3 decimals coincide. The cubic root of 117855165 is about 490.2860539929.

The spelling of 117855165 in words is "one hundred seventeen million, eight hundred fifty-five thousand, one hundred sixty-five".