165224415 has 8 divisors (see below), whose sum is σ = 264359088. Its totient is φ = 88119680.

The previous prime is 165224407. The next prime is 165224443. The reversal of 165224415 is 514422561.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 165224415 - 2³ = 165224407 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5507466 + ... + 5507495.

It is an arithmetic number, because the mean of its divisors is an integer number (33044886).

Almost surely, 2^165224415 is an apocalyptic number.

165224415 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

165224415 is a deficient number, since it is larger than the sum of its proper divisors (99134673).

165224415 is a wasteful number, since it uses less digits than its factorization.

165224415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11014969.

The product of its digits is 9600, while the sum is 30.

The square root of 165224415 is about 12853.9649524962. The cubic root of 165224415 is about 548.7292037788.

Adding to 165224415 its reverse (514422561), we get a palindrome (679646976).

The spelling of 165224415 in words is "one hundred sixty-five million, two hundred twenty-four thousand, four hundred fifteen".