115863563 has 4 divisors (see below), whose sum is σ = 115897488. Its totient is φ = 115829640.

The previous prime is 115863547. The next prime is 115863607. The reversal of 115863563 is 365368511.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 365368511 = 31 ⋅11786081.

It is a cyclic number.

It is not a de Polignac number, because 115863563 - 2⁴ = 115863547 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (115863263) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11183 + ... + 18888.

It is an arithmetic number, because the mean of its divisors is an integer number (28974372).

Almost surely, 2^115863563 is an apocalyptic number.

115863563 is a deficient number, since it is larger than the sum of its proper divisors (33925).

115863563 is an equidigital number, since it uses as much as digits as its factorization.

115863563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33924.

The product of its digits is 64800, while the sum is 38.

The square root of 115863563 is about 10763.9938219975. The cubic root of 115863563 is about 487.5086133039.

The spelling of 115863563 in words is "one hundred fifteen million, eight hundred sixty-three thousand, five hundred sixty-three".