24797 has 4 divisors (see below), whose sum is σ = 25116. Its totient is φ = 24480.

The previous prime is 24793. The next prime is 24799. The reversal of 24797 is 79742.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 5476 + 19321 = 74^2 + 139^2 .

It is a cyclic number.

It is not a de Polignac number, because 24797 - 2² = 24793 is a prime.

It is a super-2 number, since 2×24797² = 1229782418, which contains 22 as substring.

It is a Duffinian number.

It is a nialpdrome in base 15.

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, 47 + ... + 227.

It is an arithmetic number, because the mean of its divisors is an integer number (6279).

2²⁴⁷⁹⁷ is an apocalyptic number.

It is an amenable number.

24797 is a deficient number, since it is larger than the sum of its proper divisors (319).

24797 is a wasteful number, since it uses less digits than its factorization.

24797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318.

The product of its digits is 3528, while the sum is 29.

The square root of 24797 is about 157.4706321826. The cubic root of 24797 is about 29.1608187822.

Subtracting 24797 from its reverse (79742), we obtain a palindrome (54945).

The spelling of 24797 in words is "twenty-four thousand, seven hundred ninety-seven".