538665241 has 2 divisors, whose sum is σ = 538665242. Its totient is φ = 538665240.

The previous prime is 538665217. The next prime is 538665251. The reversal of 538665241 is 142566835.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 325622025 + 213043216 = 18045^2 + 14596^2 .

It is a cyclic number.

It is not a de Polignac number, because 538665241 - 2⁵ = 538665209 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 538665194 and 538665203.

It is not a weakly prime, because it can be changed into another prime (538665251) 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, 269332620 + 269332621.

It is an arithmetic number, because the mean of its divisors is an integer number (269332621).

Almost surely, 2^538665241 is an apocalyptic number.

It is an amenable number.

538665241 is a deficient number, since it is larger than the sum of its proper divisors (1).

538665241 is an equidigital number, since it uses as much as digits as its factorization.

538665241 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 172800, while the sum is 40.

The square root of 538665241 is about 23209.1628672815. The cubic root of 538665241 is about 813.6537881992.

The spelling of 538665241 in words is "five hundred thirty-eight million, six hundred sixty-five thousand, two hundred forty-one".