241565813 has 2 divisors, whose sum is σ = 241565814. Its totient is φ = 241565812.

The previous prime is 241565789. The next prime is 241565827. The reversal of 241565813 is 318565142.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 158810404 + 82755409 = 12602^2 + 9097^2 .

It is a cyclic number.

It is not a de Polignac number, because 241565813 - 2⁶ = 241565749 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (241565843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120782906 + 120782907.

It is an arithmetic number, because the mean of its divisors is an integer number (120782907).

Almost surely, 2^241565813 is an apocalyptic number.

It is an amenable number.

241565813 is a deficient number, since it is larger than the sum of its proper divisors (1).

241565813 is an equidigital number, since it uses as much as digits as its factorization.

241565813 is an evil number, because the sum of its binary digits is even.

The product of its digits is 28800, while the sum is 35.

The square root of 241565813 is about 15542.3876222413. The cubic root of 241565813 is about 622.7950574061.

The spelling of 241565813 in words is "two hundred forty-one million, five hundred sixty-five thousand, eight hundred thirteen".