165224436 has 24 divisors (see below), whose sum is σ = 415179744. Its totient is φ = 50838240.

The previous prime is 165224407. The next prime is 165224443. The reversal of 165224436 is 634422561.

It is a super-2 number, since 2×165224436² = 54598228503036192, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 165224397 and 165224406.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 529410 + ... + 529721.

It is an arithmetic number, because the mean of its divisors is an integer number (17299156).

Almost surely, 2^165224436 is an apocalyptic number.

It is an amenable number.

165224436 is an abundant number, since it is smaller than the sum of its proper divisors (249955308).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

165224436 is a wasteful number, since it uses less digits than its factorization.

165224436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1059151 (or 1059149 counting only the distinct ones).

The product of its digits is 34560, while the sum is 33.

The square root of 165224436 is about 12853.9657693647. The cubic root of 165224436 is about 548.7292270266.

Adding to 165224436 its reverse (634422561), we get a palindrome (799646997).

The spelling of 165224436 in words is "one hundred sixty-five million, two hundred twenty-four thousand, four hundred thirty-six".