24891 has 4 divisors (see below), whose sum is σ = 33192. Its totient is φ = 16592.

The previous prime is 24889. The next prime is 24907. The reversal of 24891 is 19842.

24891 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 24891 - 2¹ = 24889 is a prime.

It is a D-number.

It is a plaindrome in base 11.

It is not an unprimeable number, because it can be changed into a prime (24821) 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, 4146 + ... + 4151.

It is an arithmetic number, because the mean of its divisors is an integer number (8298).

2²⁴⁸⁹¹ is an apocalyptic number.

24891 is a deficient number, since it is larger than the sum of its proper divisors (8301).

24891 is an equidigital number, since it uses as much as digits as its factorization.

24891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8300.

The product of its digits is 576, while the sum is 24.

The square root of 24891 is about 157.7688182120. The cubic root of 24891 is about 29.1976197472.

The spelling of 24891 in words is "twenty-four thousand, eight hundred ninety-one".