165243226 has 16 divisors (see below), whose sum is σ = 250967808. Its totient is φ = 81594000.

The previous prime is 165243217. The next prime is 165243227. The reversal of 165243226 is 622342561.

It is not an unprimeable number, because it can be changed into a prime (165243227) 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, 53151 + ... + 56173.

It is an arithmetic number, because the mean of its divisors is an integer number (15685488).

Almost surely, 2^165243226 is an apocalyptic number.

165243226 is a deficient number, since it is larger than the sum of its proper divisors (85724582).

165243226 is a wasteful number, since it uses less digits than its factorization.

165243226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3357.

The product of its digits is 17280, while the sum is 31.

The square root of 165243226 is about 12854.6966514189. The cubic root of 165243226 is about 548.7500274836.

Adding to 165243226 its reverse (622342561), we get a palindrome (787585787).

The spelling of 165243226 in words is "one hundred sixty-five million, two hundred forty-three thousand, two hundred twenty-six".