226223257 has 4 divisors (see below), whose sum is σ = 243625060. Its totient is φ = 208821456.

The previous prime is 226223251. The next prime is 226223269. The reversal of 226223257 is 752322622.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 26255376 + 199967881 = 5124^2 + 14141^2 .

It is a cyclic number.

It is not a de Polignac number, because 226223257 - 2²³ = 217834649 is a prime.

It is a super-3 number, since 3×226223257³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (226223251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8700882 + ... + 8700907.

It is an arithmetic number, because the mean of its divisors is an integer number (60906265).

Almost surely, 2^226223257 is an apocalyptic number.

It is an amenable number.

226223257 is a deficient number, since it is larger than the sum of its proper divisors (17401803).

226223257 is a wasteful number, since it uses less digits than its factorization.

226223257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17401802.

The product of its digits is 20160, while the sum is 31.

The square root of 226223257 is about 15040.7199628209. The cubic root of 226223257 is about 609.3204445291.

Adding to 226223257 its reverse (752322622), we get a palindrome (978545879).

The spelling of 226223257 in words is "two hundred twenty-six million, two hundred twenty-three thousand, two hundred fifty-seven".