10226521 has 2 divisors, whose sum is σ = 10226522. Its totient is φ = 10226520.

The previous prime is 10226519. The next prime is 10226539. The reversal of 10226521 is 12562201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10208025 + 18496 = 3195^2 + 136^2 .

It is a cyclic number.

It is not a de Polignac number, because 10226521 - 2¹ = 10226519 is a prime.

Together with 10226519, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (10226501) 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, 5113260 + 5113261.

It is an arithmetic number, because the mean of its divisors is an integer number (5113261).

Almost surely, 2^10226521 is an apocalyptic number.

It is an amenable number.

10226521 is a deficient number, since it is larger than the sum of its proper divisors (1).

10226521 is an equidigital number, since it uses as much as digits as its factorization.

10226521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 10226521 is about 3197.8932127262. The cubic root of 10226521 is about 217.0580871913.

Adding to 10226521 its reverse (12562201), we get a palindrome (22788722).

The spelling of 10226521 in words is "ten million, two hundred twenty-six thousand, five hundred twenty-one".