24541721 has 2 divisors, whose sum is σ = 24541722. Its totient is φ = 24541720.

The previous prime is 24541709. The next prime is 24541747. The reversal of 24541721 is 12714542.

It is an a-pointer prime, because the next prime (24541747) can be obtained adding 24541721 to its sum of digits (26).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14707225 + 9834496 = 3835^2 + 3136^2 .

It is a cyclic number.

It is not a de Polignac number, because 24541721 - 2¹⁰ = 24540697 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (24541771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12270860 + 12270861.

It is an arithmetic number, because the mean of its divisors is an integer number (12270861).

Almost surely, 2^24541721 is an apocalyptic number.

It is an amenable number.

24541721 is a deficient number, since it is larger than the sum of its proper divisors (1).

24541721 is an equidigital number, since it uses as much as digits as its factorization.

24541721 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2240, while the sum is 26.

The square root of 24541721 is about 4953.9601330653. The cubic root of 24541721 is about 290.6040560079.

The spelling of 24541721 in words is "twenty-four million, five hundred forty-one thousand, seven hundred twenty-one".