133500165 has 32 divisors (see below), whose sum is σ = 228096000. Its totient is φ = 66513216.

The previous prime is 133500161. The next prime is 133500173. The reversal of 133500165 is 561005331.

It is not a de Polignac number, because 133500165 - 2² = 133500161 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133500161) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10336 + ... + 19334.

It is an arithmetic number, because the mean of its divisors is an integer number (7128000).

Almost surely, 2^133500165 is an apocalyptic number.

133500165 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

133500165 is a deficient number, since it is larger than the sum of its proper divisors (94595835).

133500165 is a wasteful number, since it uses less digits than its factorization.

133500165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9073.

The product of its (nonzero) digits is 1350, while the sum is 24.

The square root of 133500165 is about 11554.2271485375. The cubic root of 133500165 is about 511.0859405882.

Adding to 133500165 its reverse (561005331), we get a palindrome (694505496).

The spelling of 133500165 in words is "one hundred thirty-three million, five hundred thousand, one hundred sixty-five".