24861281 has 2 divisors, whose sum is σ = 24861282. Its totient is φ = 24861280.

The previous prime is 24861271. The next prime is 24861283. The reversal of 24861281 is 18216842.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24840256 + 21025 = 4984^2 + 145^2 .

It is a cyclic number.

It is not a de Polignac number, because 24861281 - 2¹⁰ = 24860257 is a prime.

It is a super-2 number, since 2×24861281² = 1236166585921922, which contains 22 as substring.

Together with 24861283, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (24861283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12430640 + 12430641.

It is an arithmetic number, because the mean of its divisors is an integer number (12430641).

Almost surely, 2^24861281 is an apocalyptic number.

It is an amenable number.

24861281 is a deficient number, since it is larger than the sum of its proper divisors (1).

24861281 is an equidigital number, since it uses as much as digits as its factorization.

24861281 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6144, while the sum is 32.

The square root of 24861281 is about 4986.1088034659. The cubic root of 24861281 is about 291.8599480062.

The spelling of 24861281 in words is "twenty-four million, eight hundred sixty-one thousand, two hundred eighty-one".