117115855 has 8 divisors (see below), whose sum is σ = 140770512. Its totient is φ = 93538368.

The previous prime is 117115853. The next prime is 117115879. The reversal of 117115855 is 558511711.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 117115855 - 2¹ = 117115853 is a prime.

It is a super-2 number, since 2×117115855² = 27432246984762050, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 117115855.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117115853) 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, 15897 + ... + 22066.

It is an arithmetic number, because the mean of its divisors is an integer number (17596314).

Almost surely, 2^117115855 is an apocalyptic number.

117115855 is a deficient number, since it is larger than the sum of its proper divisors (23654657).

117115855 is an equidigital number, since it uses as much as digits as its factorization.

117115855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38585.

The product of its digits is 7000, while the sum is 34.

The square root of 117115855 is about 10822.0079005700. The cubic root of 117115855 is about 489.2587083476.

It can be divided in two parts, 11711 and 5855, that multiplied together give a triangular number (68567905 = T₁₁₇₁₀).

The spelling of 117115855 in words is "one hundred seventeen million, one hundred fifteen thousand, eight hundred fifty-five".