24722281 has 2 divisors, whose sum is σ = 24722282. Its totient is φ = 24722280.

The previous prime is 24722279. The next prime is 24722311. The reversal of 24722281 is 18222742.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19501056 + 5221225 = 4416^2 + 2285^2 .

It is a cyclic number.

It is not a de Polignac number, because 24722281 - 2¹ = 24722279 is a prime.

It is a super-2 number, since 2×24722281² = 1222382355685922, which contains 22 as substring.

Together with 24722279, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (24722251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12361140 + 12361141.

It is an arithmetic number, because the mean of its divisors is an integer number (12361141).

Almost surely, 2^24722281 is an apocalyptic number.

It is an amenable number.

24722281 is a deficient number, since it is larger than the sum of its proper divisors (1).

24722281 is an equidigital number, since it uses as much as digits as its factorization.

24722281 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3584, while the sum is 28.

The square root of 24722281 is about 4972.1505407620. The cubic root of 24722281 is about 291.3149992157.

It can be divided in two parts, 2472 and 2281, that added together give a triangular number (4753 = T₉₇).

The spelling of 24722281 in words is "twenty-four million, seven hundred twenty-two thousand, two hundred eighty-one".