200533681 has 2 divisors, whose sum is σ = 200533682. Its totient is φ = 200533680.

The previous prime is 200533633. The next prime is 200533703. The reversal of 200533681 is 186335002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 108680625 + 91853056 = 10425^2 + 9584^2 .

It is a cyclic number.

It is not a de Polignac number, because 200533681 - 2²³ = 192145073 is a prime.

It is a super-2 number, since 2×200533681² = 80427514430819522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (200533601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100266840 + 100266841.

It is an arithmetic number, because the mean of its divisors is an integer number (100266841).

Almost surely, 2^200533681 is an apocalyptic number.

It is an amenable number.

200533681 is a deficient number, since it is larger than the sum of its proper divisors (1).

200533681 is an equidigital number, since it uses as much as digits as its factorization.

200533681 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 200533681 is about 14160.9915260196. The cubic root of 200533681 is about 585.3232498945.

Adding to 200533681 its reverse (186335002), we get a palindrome (386868683).

The spelling of 200533681 in words is "two hundred million, five hundred thirty-three thousand, six hundred eighty-one".