268226521 has 2 divisors, whose sum is σ = 268226522. Its totient is φ = 268226520.

The previous prime is 268226507. The next prime is 268226533. The reversal of 268226521 is 125622862.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 261145600 + 7080921 = 16160^2 + 2661^2 .

It is a cyclic number.

It is not a de Polignac number, because 268226521 - 2⁹ = 268226009 is a prime.

It is not a weakly prime, because it can be changed into another prime (268226501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134113260 + 134113261.

It is an arithmetic number, because the mean of its divisors is an integer number (134113261).

Almost surely, 2^268226521 is an apocalyptic number.

It is an amenable number.

268226521 is a deficient number, since it is larger than the sum of its proper divisors (1).

268226521 is an equidigital number, since it uses as much as digits as its factorization.

268226521 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23040, while the sum is 34.

The square root of 268226521 is about 16377.6225686148. The cubic root of 268226521 is about 644.9121696002.

The spelling of 268226521 in words is "two hundred sixty-eight million, two hundred twenty-six thousand, five hundred twenty-one".