118563 has 4 divisors (see below), whose sum is σ = 158088. Its totient is φ = 79040.

The previous prime is 118549. The next prime is 118571. The reversal of 118563 is 365811.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 365811 = 3 ⋅121937.

It is a cyclic number.

It is not a de Polignac number, because 118563 - 2⁹ = 118051 is a prime.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (118543) 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, 19758 + ... + 19763.

It is an arithmetic number, because the mean of its divisors is an integer number (39522).

2¹¹⁸⁵⁶³ is an apocalyptic number.

118563 is a deficient number, since it is larger than the sum of its proper divisors (39525).

118563 is an equidigital number, since it uses as much as digits as its factorization.

118563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39524.

The product of its digits is 720, while the sum is 24.

The square root of 118563 is about 344.3297837829. The cubic root of 118563 is about 49.1265643825.

The spelling of 118563 in words is "one hundred eighteen thousand, five hundred sixty-three".