165373 has 4 divisors (see below), whose sum is σ = 178108. Its totient is φ = 152640.

The previous prime is 165367. The next prime is 165379. The reversal of 165373 is 373561.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (165367) and next prime (165379).

It can be written as a sum of positive squares in 2 ways, for example, as 85849 + 79524 = 293^2 + 282^2 .

It is a cyclic number.

It is not a de Polignac number, because 165373 - 2¹³ = 157181 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 (165379) by changing a digit.

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, 6348 + ... + 6373.

It is an arithmetic number, because the mean of its divisors is an integer number (44527).

2¹⁶⁵³⁷³ is an apocalyptic number.

165373 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

165373 is a deficient number, since it is larger than the sum of its proper divisors (12735).

165373 is a wasteful number, since it uses less digits than its factorization.

165373 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12734.

The product of its digits is 1890, while the sum is 25.

The square root of 165373 is about 406.6607923073. The cubic root of 165373 is about 54.8893643762.

The spelling of 165373 in words is "one hundred sixty-five thousand, three hundred seventy-three".