24445 has 4 divisors (see below), whose sum is σ = 29340. Its totient is φ = 19552.

The previous prime is 24443. The next prime is 24469. The reversal of 24445 is 54442.

24445 is nontrivially palindromic in base 2 and base 8.

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

It can be written as a sum of positive squares in 2 ways, for example, as 12996 + 11449 = 114^2 + 107^2 .

It is a cyclic number.

It is not a de Polignac number, because 24445 - 2¹ = 24443 is a prime.

24445 is an undulating number in base 8.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (24443) 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, 2440 + ... + 2449.

It is an arithmetic number, because the mean of its divisors is an integer number (7335).

2²⁴⁴⁴⁵ is an apocalyptic number.

It is an amenable number.

24445 is a deficient number, since it is larger than the sum of its proper divisors (4895).

24445 is an equidigital number, since it uses as much as digits as its factorization.

24445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4894.

The product of its digits is 640, while the sum is 19.

The square root of 24445 is about 156.3489686567. The cubic root of 24445 is about 29.0221788322.

Adding to 24445 its reverse (54442), we get a palindrome (78887).

It can be divided in two parts, 244 and 45, that added together give a square (289 = 17²).

The spelling of 24445 in words is "twenty-four thousand, four hundred forty-five".