133207056 has 60 divisors (see below), whose sum is σ = 374804508. Its totient is φ = 44163072.

The previous prime is 133207037. The next prime is 133207079. The reversal of 133207056 is 650702331.

It is a happy number.

133207056 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 75690000 + 57517056 = 8700^2 + 7584^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25396 + ... + 30188.

Almost surely, 2^133207056 is an apocalyptic number.

133207056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 133207056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (187402254).

133207056 is an abundant number, since it is smaller than the sum of its proper divisors (241597452).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

133207056 is a wasteful number, since it uses less digits than its factorization.

133207056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5000 (or 4991 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 27.

The square root of 133207056 is about 11541.5361195986. The cubic root of 133207056 is about 510.7116248014.

Adding to 133207056 its reverse (650702331), we get a palindrome (783909387).

The spelling of 133207056 in words is "one hundred thirty-three million, two hundred seven thousand, fifty-six".