200290561 has 2 divisors, whose sum is σ = 200290562. Its totient is φ = 200290560.

The previous prime is 200290553. The next prime is 200290589. The reversal of 200290561 is 165092002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 172791025 + 27499536 = 13145^2 + 5244^2 .

It is a cyclic number.

It is not a de Polignac number, because 200290561 - 2³ = 200290553 is a prime.

It is not a weakly prime, because it can be changed into another prime (200290261) 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, 100145280 + 100145281.

It is an arithmetic number, because the mean of its divisors is an integer number (100145281).

Almost surely, 2^200290561 is an apocalyptic number.

It is an amenable number.

200290561 is a deficient number, since it is larger than the sum of its proper divisors (1).

200290561 is an equidigital number, since it uses as much as digits as its factorization.

200290561 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 200290561 is about 14152.4047779874. The cubic root of 200290561 is about 585.0866124468.

The spelling of 200290561 in words is "two hundred million, two hundred ninety thousand, five hundred sixty-one".