24969221 has 2 divisors, whose sum is σ = 24969222. Its totient is φ = 24969220.

The previous prime is 24969193. The next prime is 24969223. The reversal of 24969221 is 12296942.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14145121 + 10824100 = 3761^2 + 3290^2 .

It is a cyclic number.

It is not a de Polignac number, because 24969221 - 2¹⁰ = 24968197 is a prime.

Together with 24969223, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (24969223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12484610 + 12484611.

It is an arithmetic number, because the mean of its divisors is an integer number (12484611).

Almost surely, 2^24969221 is an apocalyptic number.

It is an amenable number.

24969221 is a deficient number, since it is larger than the sum of its proper divisors (1).

24969221 is an equidigital number, since it uses as much as digits as its factorization.

24969221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15552, while the sum is 35.

The square root of 24969221 is about 4996.9211520695. The cubic root of 24969221 is about 292.2817267528.

The spelling of 24969221 in words is "twenty-four million, nine hundred sixty-nine thousand, two hundred twenty-one".