226551289 has 2 divisors, whose sum is σ = 226551290. Its totient is φ = 226551288.

The previous prime is 226551287. The next prime is 226551323. The reversal of 226551289 is 982155622.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 198810000 + 27741289 = 14100^2 + 5267^2 .

It is a cyclic number.

It is not a de Polignac number, because 226551289 - 2¹ = 226551287 is a prime.

Together with 226551287, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (226551287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 113275644 + 113275645.

It is an arithmetic number, because the mean of its divisors is an integer number (113275645).

Almost surely, 2^226551289 is an apocalyptic number.

It is an amenable number.

226551289 is a deficient number, since it is larger than the sum of its proper divisors (1).

226551289 is an equidigital number, since it uses as much as digits as its factorization.

226551289 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 86400, while the sum is 40.

The square root of 226551289 is about 15051.6208097334. The cubic root of 226551289 is about 609.6148146055.

The spelling of 226551289 in words is "two hundred twenty-six million, five hundred fifty-one thousand, two hundred eighty-nine".