133005256 has 16 divisors (see below), whose sum is σ = 249587100. Its totient is φ = 66448704.

The previous prime is 133005247. The next prime is 133005277. The reversal of 133005256 is 652500331.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 77264100 + 55741156 = 8790^2 + 7466^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 133005256.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4930 + ... + 17038.

Almost surely, 2^133005256 is an apocalyptic number.

It is an amenable number.

133005256 is a deficient number, since it is larger than the sum of its proper divisors (116581844).

133005256 is a wasteful number, since it uses less digits than its factorization.

133005256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13488 (or 13484 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 25.

The square root of 133005256 is about 11532.7904689195. The cubic root of 133005256 is about 510.4535961937.

Adding to 133005256 its reverse (652500331), we get a palindrome (785505587).

The spelling of 133005256 in words is "one hundred thirty-three million, five thousand, two hundred fifty-six".