241606721 has 2 divisors, whose sum is σ = 241606722. Its totient is φ = 241606720.

The previous prime is 241606709. The next prime is 241606747. The reversal of 241606721 is 127606142.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 128482225 + 113124496 = 11335^2 + 10636^2 .

It is a cyclic number.

It is not a de Polignac number, because 241606721 - 2¹⁴ = 241590337 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (241606751) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120803360 + 120803361.

It is an arithmetic number, because the mean of its divisors is an integer number (120803361).

Almost surely, 2^241606721 is an apocalyptic number.

It is an amenable number.

241606721 is a deficient number, since it is larger than the sum of its proper divisors (1).

241606721 is an equidigital number, since it uses as much as digits as its factorization.

241606721 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 241606721 is about 15543.7035805499. The cubic root of 241606721 is about 622.8302111969.

The spelling of 241606721 in words is "two hundred forty-one million, six hundred six thousand, seven hundred twenty-one".