115800155 has 8 divisors (see below), whose sum is σ = 146274000. Its totient is φ = 87764256.

The previous prime is 115800149. The next prime is 115800163. The reversal of 115800155 is 551008511.

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 115800155 - 2¹² = 115796059 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 609380 + ... + 609569.

It is an arithmetic number, because the mean of its divisors is an integer number (18284250).

Almost surely, 2^115800155 is an apocalyptic number.

115800155 is a deficient number, since it is larger than the sum of its proper divisors (30473845).

115800155 is a wasteful number, since it uses less digits than its factorization.

115800155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1218973.

The product of its (nonzero) digits is 1000, while the sum is 26.

The square root of 115800155 is about 10761.0480437548. The cubic root of 115800155 is about 487.4196650442.

Adding to 115800155 its reverse (551008511), we get a palindrome (666808666).

The spelling of 115800155 in words is "one hundred fifteen million, eight hundred thousand, one hundred fifty-five".