165755 has 4 divisors (see below), whose sum is σ = 198912. Its totient is φ = 132600.

The previous prime is 165749. The next prime is 165779. The reversal of 165755 is 557561.

165755 is nontrivially palindromic in base 13.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 557561 = 47 ⋅11863.

It is not a de Polignac number, because 165755 - 2¹² = 161659 is a prime.

It is a Duffinian number.

165755 is an undulating number in base 13.

It is a plaindrome in base 14.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16571 + ... + 16580.

It is an arithmetic number, because the mean of its divisors is an integer number (49728).

2¹⁶⁵⁷⁵⁵ is an apocalyptic number.

165755 is a deficient number, since it is larger than the sum of its proper divisors (33157).

165755 is an equidigital number, since it uses as much as digits as its factorization.

165755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33156.

The product of its digits is 5250, while the sum is 29.

The square root of 165755 is about 407.1302003045. The cubic root of 165755 is about 54.9315953999.

It can be divided in two parts, 1 and 65755, that added together give a palindrome (65756).

The spelling of 165755 in words is "one hundred sixty-five thousand, seven hundred fifty-five".