650526221 has 2 divisors, whose sum is σ = 650526222. Its totient is φ = 650526220.

The previous prime is 650526209. The next prime is 650526223. The reversal of 650526221 is 122625056.

650526221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 649536196 + 990025 = 25486^2 + 995^2 .

It is a cyclic number.

It is not a de Polignac number, because 650526221 - 2¹⁸ = 650264077 is a prime.

Together with 650526223, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (650526223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 325263110 + 325263111.

It is an arithmetic number, because the mean of its divisors is an integer number (325263111).

Almost surely, 2^650526221 is an apocalyptic number.

It is an amenable number.

650526221 is a deficient number, since it is larger than the sum of its proper divisors (1).

650526221 is an equidigital number, since it uses as much as digits as its factorization.

650526221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 650526221 is about 25505.4155229826. The cubic root of 650526221 is about 866.4728029070.

The spelling of 650526221 in words is "six hundred fifty million, five hundred twenty-six thousand, two hundred twenty-one".