241745221 has 2 divisors, whose sum is σ = 241745222. Its totient is φ = 241745220.

The previous prime is 241745213. The next prime is 241745281. The reversal of 241745221 is 122547142.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 236390625 + 5354596 = 15375^2 + 2314^2 .

It is a cyclic number.

It is not a de Polignac number, because 241745221 - 2³ = 241745213 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 241745221.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (241745281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120872610 + 120872611.

It is an arithmetic number, because the mean of its divisors is an integer number (120872611).

Almost surely, 2^241745221 is an apocalyptic number.

It is an amenable number.

241745221 is a deficient number, since it is larger than the sum of its proper divisors (1).

241745221 is an equidigital number, since it uses as much as digits as its factorization.

241745221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4480, while the sum is 28.

The square root of 241745221 is about 15548.1581224272. The cubic root of 241745221 is about 622.9492000314.

The spelling of 241745221 in words is "two hundred forty-one million, seven hundred forty-five thousand, two hundred twenty-one".