226571729 has 2 divisors, whose sum is σ = 226571730. Its totient is φ = 226571728.

The previous prime is 226571707. The next prime is 226571743. The reversal of 226571729 is 927175622.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 226562704 + 9025 = 15052^2 + 95^2 .

It is a cyclic number.

It is not a de Polignac number, because 226571729 - 2²⁴ = 209794513 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (226571749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 113285864 + 113285865.

It is an arithmetic number, because the mean of its divisors is an integer number (113285865).

Almost surely, 2^226571729 is an apocalyptic number.

It is an amenable number.

226571729 is a deficient number, since it is larger than the sum of its proper divisors (1).

226571729 is an equidigital number, since it uses as much as digits as its factorization.

226571729 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 105840, while the sum is 41.

The square root of 226571729 is about 15052.2997910618. The cubic root of 226571729 is about 609.6331476904.

The spelling of 226571729 in words is "two hundred twenty-six million, five hundred seventy-one thousand, seven hundred twenty-nine".