165222226 has 16 divisors (see below), whose sum is σ = 268695000. Its totient is φ = 75742848.

The previous prime is 165222223. The next prime is 165222227. The reversal of 165222226 is 622222561.

165222226 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 88642225 + 76580001 = 9415^2 + 8751^2 .

It is a junction number, because it is equal to n+sod(n) for n = 165222194 and 165222203.

It is not an unprimeable number, because it can be changed into a prime (165222223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17451 + ... + 25198.

Almost surely, 2^165222226 is an apocalyptic number.

165222226 is a deficient number, since it is larger than the sum of its proper divisors (103472774).

165222226 is a wasteful number, since it uses less digits than its factorization.

165222226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42813.

The product of its digits is 5760, while the sum is 28.

The square root of 165222226 is about 12853.8798033901. The cubic root of 165222226 is about 548.7267804615.

Adding to 165222226 its reverse (622222561), we get a palindrome (787444787).

The spelling of 165222226 in words is "one hundred sixty-five million, two hundred twenty-two thousand, two hundred twenty-six".