165226235 has 4 divisors (see below), whose sum is σ = 198271488. Its totient is φ = 132180984.

The previous prime is 165226231. The next prime is 165226241. The reversal of 165226235 is 532622561.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 532622561 = 491 ⋅1084771.

It is a cyclic number.

It is not a de Polignac number, because 165226235 - 2² = 165226231 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (165226231) 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, 16522619 + ... + 16522628.

It is an arithmetic number, because the mean of its divisors is an integer number (49567872).

Almost surely, 2^165226235 is an apocalyptic number.

165226235 is a deficient number, since it is larger than the sum of its proper divisors (33045253).

165226235 is an equidigital number, since it uses as much as digits as its factorization.

165226235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33045252.

The product of its digits is 21600, while the sum is 32.

The square root of 165226235 is about 12854.0357475775. The cubic root of 165226235 is about 548.7312185808.

Adding to 165226235 its reverse (532622561), we get a palindrome (697848796).

The spelling of 165226235 in words is "one hundred sixty-five million, two hundred twenty-six thousand, two hundred thirty-five".