165023205 has 8 divisors (see below), whose sum is σ = 264037152. Its totient is φ = 88012368.

The previous prime is 165023197. The next prime is 165023249. The reversal of 165023205 is 502320561.

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

It is not a de Polignac number, because 165023205 - 2³ = 165023197 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5500759 + ... + 5500788.

It is an arithmetic number, because the mean of its divisors is an integer number (33004644).

Almost surely, 2^165023205 is an apocalyptic number.

165023205 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

165023205 is a deficient number, since it is larger than the sum of its proper divisors (99013947).

165023205 is a wasteful number, since it uses less digits than its factorization.

165023205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11001555.

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 165023205 is about 12846.1358003098. The cubic root of 165023205 is about 548.5063661463.

Adding to 165023205 its reverse (502320561), we get a palindrome (667343766).

The spelling of 165023205 in words is "one hundred sixty-five million, twenty-three thousand, two hundred five".