133255736 has 8 divisors (see below), whose sum is σ = 249854520. Its totient is φ = 66627864.

The previous prime is 133255723. The next prime is 133255739. The reversal of 133255736 is 637552331.

It is a happy number.

133255736 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a junction number, because it is equal to n+sod(n) for n = 133255696 and 133255705.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133255739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8328476 + ... + 8328491.

It is an arithmetic number, because the mean of its divisors is an integer number (31231815).

Almost surely, 2^133255736 is an apocalyptic number.

It is an amenable number.

133255736 is a deficient number, since it is larger than the sum of its proper divisors (116598784).

133255736 is a wasteful number, since it uses less digits than its factorization.

133255736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16656973 (or 16656969 counting only the distinct ones).

The product of its digits is 56700, while the sum is 35.

The square root of 133255736 is about 11543.6448316812. The cubic root of 133255736 is about 510.7738297495.

The spelling of 133255736 in words is "one hundred thirty-three million, two hundred fifty-five thousand, seven hundred thirty-six".