24931261 has 2 divisors, whose sum is σ = 24931262. Its totient is φ = 24931260.

The previous prime is 24931259. The next prime is 24931267. The reversal of 24931261 is 16213942.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21622500 + 3308761 = 4650^2 + 1819^2 .

It is a cyclic number.

It is not a de Polignac number, because 24931261 - 2¹ = 24931259 is a prime.

Together with 24931259, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (24931267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12465630 + 12465631.

It is an arithmetic number, because the mean of its divisors is an integer number (12465631).

Almost surely, 2^24931261 is an apocalyptic number.

It is an amenable number.

24931261 is a deficient number, since it is larger than the sum of its proper divisors (1).

24931261 is an equidigital number, since it uses as much as digits as its factorization.

24931261 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2592, while the sum is 28.

The square root of 24931261 is about 4993.1213684428. The cubic root of 24931261 is about 292.1335357516.

The spelling of 24931261 in words is "twenty-four million, nine hundred thirty-one thousand, two hundred sixty-one".