241538261 has 12 divisors (see below), whose sum is σ = 257967108. Its totient is φ = 225372672.

The previous prime is 241538251. The next prime is 241538263. The reversal of 241538261 is 162835142.

It can be written as a sum of positive squares in 6 ways, for example, as 20421361 + 221116900 = 4519^2 + 14870^2 .

It is not a de Polignac number, because 241538261 - 2⁶ = 241538197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (241538263) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 318695 + ... + 319451.

It is an arithmetic number, because the mean of its divisors is an integer number (21497259).

Almost surely, 2^241538261 is an apocalyptic number.

It is an amenable number.

241538261 is a deficient number, since it is larger than the sum of its proper divisors (16428847).

241538261 is an equidigital number, since it uses as much as digits as its factorization.

241538261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1048 (or 911 counting only the distinct ones).

The product of its digits is 11520, while the sum is 32.

The square root of 241538261 is about 15541.5012466621. The cubic root of 241538261 is about 622.7713786942.

The spelling of 241538261 in words is "two hundred forty-one million, five hundred thirty-eight thousand, two hundred sixty-one".