200021513 has 2 divisors, whose sum is σ = 200021514. Its totient is φ = 200021512.

The previous prime is 200021491. The next prime is 200021527. The reversal of 200021513 is 315120002.

It is a happy number.

It is an a-pointer prime, because the next prime (200021527) can be obtained adding 200021513 to its sum of digits (14).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 100560784 + 99460729 = 10028^2 + 9973^2 .

It is a cyclic number.

It is not a de Polignac number, because 200021513 - 2¹² = 200017417 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (200821513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100010756 + 100010757.

It is an arithmetic number, because the mean of its divisors is an integer number (100010757).

Almost surely, 2^200021513 is an apocalyptic number.

It is an amenable number.

200021513 is a deficient number, since it is larger than the sum of its proper divisors (1).

200021513 is an equidigital number, since it uses as much as digits as its factorization.

200021513 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 60, while the sum is 14.

The square root of 200021513 is about 14142.8962026878. The cubic root of 200021513 is about 584.8245150220.

Adding to 200021513 its reverse (315120002), we get a palindrome (515141515).

The spelling of 200021513 in words is "two hundred million, twenty-one thousand, five hundred thirteen".