165727223 has 4 divisors (see below), whose sum is σ = 165753000. Its totient is φ = 165701448.

The previous prime is 165727201. The next prime is 165727229. The reversal of 165727223 is 322727561.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 165727223 - 2¹² = 165723127 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165727229) 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, 5528 + ... + 19026.

It is an arithmetic number, because the mean of its divisors is an integer number (41438250).

Almost surely, 2^165727223 is an apocalyptic number.

165727223 is a deficient number, since it is larger than the sum of its proper divisors (25777).

165727223 is a wasteful number, since it uses less digits than its factorization.

165727223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25776.

The product of its digits is 35280, while the sum is 35.

The square root of 165727223 is about 12873.5085738116. The cubic root of 165727223 is about 549.2852677416.

The spelling of 165727223 in words is "one hundred sixty-five million, seven hundred twenty-seven thousand, two hundred twenty-three".