226235509 has 2 divisors, whose sum is σ = 226235510. Its totient is φ = 226235508.

The previous prime is 226235453. The next prime is 226235543. The reversal of 226235509 is 905532622.

It is a happy number.

It is an a-pointer prime, because the next prime (226235543) can be obtained adding 226235509 to its sum of digits (34).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 126675025 + 99560484 = 11255^2 + 9978^2 .

It is a cyclic number.

It is not a de Polignac number, because 226235509 - 2¹³ = 226227317 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (226235209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 113117754 + 113117755.

It is an arithmetic number, because the mean of its divisors is an integer number (113117755).

Almost surely, 2^226235509 is an apocalyptic number.

It is an amenable number.

226235509 is a deficient number, since it is larger than the sum of its proper divisors (1).

226235509 is an equidigital number, since it uses as much as digits as its factorization.

226235509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32400, while the sum is 34.

The square root of 226235509 is about 15041.1272516391. The cubic root of 226235509 is about 609.3314443697.

The spelling of 226235509 in words is "two hundred twenty-six million, two hundred thirty-five thousand, five hundred nine".