24805381 has 2 divisors, whose sum is σ = 24805382. Its totient is φ = 24805380.

The previous prime is 24805379. The next prime is 24805399. The reversal of 24805381 is 18350842.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24750625 + 54756 = 4975^2 + 234^2 .

It is a cyclic number.

It is not a de Polignac number, because 24805381 - 2¹ = 24805379 is a prime.

It is a super-2 number, since 2×24805381² = 1230613853110322, which contains 22 as substring.

Together with 24805379, it forms a pair of twin primes.

It is the 4981-st Hogben number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (24805321) by changing a digit.

It is a nontrivial repunit in base 4980.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12402690 + 12402691.

It is an arithmetic number, because the mean of its divisors is an integer number (12402691).

Almost surely, 2^24805381 is an apocalyptic number.

It is an amenable number.

24805381 is a deficient number, since it is larger than the sum of its proper divisors (1).

24805381 is an equidigital number, since it uses as much as digits as its factorization.

24805381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7680, while the sum is 31.

The square root of 24805381 is about 4980.5000752936. The cubic root of 24805381 is about 291.6410371311.

The spelling of 24805381 in words is "twenty-four million, eight hundred five thousand, three hundred eighty-one".