165173233 has 4 divisors (see below), whose sum is σ = 165757168. Its totient is φ = 164589300.

The previous prime is 165173227. The next prime is 165173287. The reversal of 165173233 is 332371561.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-165173233 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 165173195 and 165173204.

It is not an unprimeable number, because it can be changed into a prime (165173293) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 291543 + ... + 292108.

It is an arithmetic number, because the mean of its divisors is an integer number (41439292).

Almost surely, 2^165173233 is an apocalyptic number.

It is an amenable number.

165173233 is a deficient number, since it is larger than the sum of its proper divisors (583935).

165173233 is an equidigital number, since it uses as much as digits as its factorization.

165173233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 583934.

The product of its digits is 11340, while the sum is 31.

The square root of 165173233 is about 12851.9738950871. The cubic root of 165173233 is about 548.6725374993.

The spelling of 165173233 in words is "one hundred sixty-five million, one hundred seventy-three thousand, two hundred thirty-three".