133256 has 8 divisors (see below), whose sum is σ = 249870. Its totient is φ = 66624.

The previous prime is 133253. The next prime is 133261. The reversal of 133256 is 652331.

It can be written as a sum of positive squares in only one way, i.e., 70756 + 62500 = 266^2 + 250^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (133253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8321 + ... + 8336.

133256 is a Friedman number, since it can be written as 365^2+31, using all its digits and the basic arithmetic operations.

2¹³³²⁵⁶ is an apocalyptic number.

It is an amenable number.

133256 is a deficient number, since it is larger than the sum of its proper divisors (116614).

133256 is a wasteful number, since it uses less digits than its factorization.

133256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16663 (or 16659 counting only the distinct ones).

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

The square root of 133256 is about 365.0424632834. The cubic root of 133256 is about 51.0774167056.

Adding to 133256 its reverse (652331), we get a palindrome (785587).

It can be divided in two parts, 13325 and 6, that added together give a palindrome (13331).

The spelling of 133256 in words is "one hundred thirty-three thousand, two hundred fifty-six".