165323955 has 16 divisors (see below), whose sum is σ = 271668384. Its totient is φ = 85789440.

The previous prime is 165323941. The next prime is 165323981. The reversal of 165323955 is 559323561.

It is not a de Polignac number, because 165323955 - 2⁵ = 165323923 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 148386 + ... + 149495.

It is an arithmetic number, because the mean of its divisors is an integer number (16979274).

Almost surely, 2^165323955 is an apocalyptic number.

165323955 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

165323955 is a deficient number, since it is larger than the sum of its proper divisors (106344429).

165323955 is a wasteful number, since it uses less digits than its factorization.

165323955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 297926.

The product of its digits is 121500, while the sum is 39.

The square root of 165323955 is about 12857.8363265364. The cubic root of 165323955 is about 548.8393762369.

The spelling of 165323955 in words is "one hundred sixty-five million, three hundred twenty-three thousand, nine hundred fifty-five".