200528609 has 2 divisors, whose sum is σ = 200528610. Its totient is φ = 200528608.

The previous prime is 200528579. The next prime is 200528611. The reversal of 200528609 is 906825002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 162435025 + 38093584 = 12745^2 + 6172^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-200528609 is a prime.

Together with 200528611, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (200528689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100264304 + 100264305.

It is an arithmetic number, because the mean of its divisors is an integer number (100264305).

Almost surely, 2^200528609 is an apocalyptic number.

It is an amenable number.

200528609 is a deficient number, since it is larger than the sum of its proper divisors (1).

200528609 is an equidigital number, since it uses as much as digits as its factorization.

200528609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 200528609 is about 14160.8124413820. The cubic root of 200528609 is about 585.3183150883.

The spelling of 200528609 in words is "two hundred million, five hundred twenty-eight thousand, six hundred nine".