165203 has 2 divisors, whose sum is σ = 165204. Its totient is φ = 165202.

The previous prime is 165181. The next prime is 165211. The reversal of 165203 is 302561.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 165203 - 2¹⁶ = 99667 is a prime.

It is not a weakly prime, because it can be changed into another prime (165233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82601 + 82602.

It is an arithmetic number, because the mean of its divisors is an integer number (82602).

2¹⁶⁵²⁰³ is an apocalyptic number.

165203 is a deficient number, since it is larger than the sum of its proper divisors (1).

165203 is an equidigital number, since it uses as much as digits as its factorization.

165203 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 165203 is about 406.4517191500. The cubic root of 165203 is about 54.8705495532.

Adding to 165203 its reverse (302561), we get a palindrome (467764).

The spelling of 165203 in words is "one hundred sixty-five thousand, two hundred three".