115505103 has 48 divisors (see below), whose sum is σ = 189112320. Its totient is φ = 62403264.

The previous prime is 115505099. The next prime is 115505141. The reversal of 115505103 is 301505511.

It is not a de Polignac number, because 115505103 - 2² = 115505099 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 115505103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115505153) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 429253 + ... + 429521.

It is an arithmetic number, because the mean of its divisors is an integer number (3939840).

Almost surely, 2^115505103 is an apocalyptic number.

115505103 is a deficient number, since it is larger than the sum of its proper divisors (73607217).

115505103 is a wasteful number, since it uses less digits than its factorization.

115505103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 436 (or 429 counting only the distinct ones).

The product of its (nonzero) digits is 375, while the sum is 21.

The square root of 115505103 is about 10747.3300405263. The cubic root of 115505103 is about 487.0053407181.

It can be divided in two parts, 11550 and 5103, that added together give a triangular number (16653 = T₁₈₂).

The spelling of 115505103 in words is "one hundred fifteen million, five hundred five thousand, one hundred three".