115778155 has 8 divisors (see below), whose sum is σ = 141890112. Its totient is φ = 90651648.

The previous prime is 115778141. The next prime is 115778189. The reversal of 115778155 is 551877511.

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 115778155 - 2⁷ = 115778027 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 246102 + ... + 246571.

It is an arithmetic number, because the mean of its divisors is an integer number (17736264).

Almost surely, 2^115778155 is an apocalyptic number.

115778155 is a deficient number, since it is larger than the sum of its proper divisors (26111957).

115778155 is an equidigital number, since it uses as much as digits as its factorization.

115778155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 492725.

The product of its digits is 49000, while the sum is 40.

The square root of 115778155 is about 10760.0257899319. The cubic root of 115778155 is about 487.3887960245.

The spelling of 115778155 in words is "one hundred fifteen million, seven hundred seventy-eight thousand, one hundred fifty-five".