208050581 has 2 divisors, whose sum is σ = 208050582. Its totient is φ = 208050580.

The previous prime is 208050569. The next prime is 208050649. The reversal of 208050581 is 185050802.

208050581 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 192376900 + 15673681 = 13870^2 + 3959^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-208050581 is a prime.

It is a super-2 number, since 2×208050581² = 86570088508875122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (208050481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 104025290 + 104025291.

It is an arithmetic number, because the mean of its divisors is an integer number (104025291).

Almost surely, 2^208050581 is an apocalyptic number.

It is an amenable number.

208050581 is a deficient number, since it is larger than the sum of its proper divisors (1).

208050581 is an equidigital number, since it uses as much as digits as its factorization.

208050581 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3200, while the sum is 29.

The square root of 208050581 is about 14423.9585759250. The cubic root of 208050581 is about 592.5472373574.

The spelling of 208050581 in words is "two hundred eight million, fifty thousand, five hundred eighty-one".