133265 has 8 divisors (see below), whose sum is σ = 174528. Its totient is φ = 96880.

The previous prime is 133261. The next prime is 133271. The reversal of 133265 is 562331.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 133265 - 2² = 133261 is a prime.

It is a Duffinian number.

It is a plaindrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (133261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1157 + ... + 1266.

It is an arithmetic number, because the mean of its divisors is an integer number (21816).

2¹³³²⁶⁵ is an apocalyptic number.

It is an amenable number.

133265 is a deficient number, since it is larger than the sum of its proper divisors (41263).

133265 is a wasteful number, since it uses less digits than its factorization.

133265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2439.

The product of its digits is 540, while the sum is 20.

The square root of 133265 is about 365.0547904082. The cubic root of 133265 is about 51.0785665886.

Adding to 133265 its reverse (562331), we get a palindrome (695596).

It can be divided in two parts, 13326 and 5, that added together give a palindrome (13331).

The spelling of 133265 in words is "one hundred thirty-three thousand, two hundred sixty-five".