241530221 has 4 divisors (see below), whose sum is σ = 247421244. Its totient is φ = 235639200.

The previous prime is 241530217. The next prime is 241530277. The reversal of 241530221 is 122035142.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4708900 + 236821321 = 2170^2 + 15389^2 .

It is a cyclic number.

It is not a de Polignac number, because 241530221 - 2² = 241530217 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 241530193 and 241530202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (241530281) 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 in 3 ways as a sum of consecutive naturals, for example, 2945450 + ... + 2945531.

It is an arithmetic number, because the mean of its divisors is an integer number (61855311).

Almost surely, 2^241530221 is an apocalyptic number.

It is an amenable number.

241530221 is a deficient number, since it is larger than the sum of its proper divisors (5891023).

241530221 is an equidigital number, since it uses as much as digits as its factorization.

241530221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5891022.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 241530221 is about 15541.2425822390. The cubic root of 241530221 is about 622.7644686262.

Adding to 241530221 its reverse (122035142), we get a palindrome (363565363).

The spelling of 241530221 in words is "two hundred forty-one million, five hundred thirty thousand, two hundred twenty-one".