24791 has 4 divisors (see below), whose sum is σ = 26712. Its totient is φ = 22872.

The previous prime is 24781. The next prime is 24793. The reversal of 24791 is 19742.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19742 = 2 ⋅9871.

It is a cyclic number.

It is not a de Polignac number, because 24791 - 2¹⁰ = 23767 is a prime.

It is a super-2 number, since 2×24791² = 1229187362, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (24793) 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, 941 + ... + 966.

It is an arithmetic number, because the mean of its divisors is an integer number (6678).

2²⁴⁷⁹¹ is an apocalyptic number.

24791 is a deficient number, since it is larger than the sum of its proper divisors (1921).

24791 is a wasteful number, since it uses less digits than its factorization.

24791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1920.

The product of its digits is 504, while the sum is 23.

The square root of 24791 is about 157.4515798587. The cubic root of 24791 is about 29.1584666291.

The spelling of 24791 in words is "twenty-four thousand, seven hundred ninety-one".