133497756 has 54 divisors (see below), whose sum is σ = 392552160. Its totient is φ = 38141712.

The previous prime is 133497751. The next prime is 133497769. The reversal of 133497756 is 657794331.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133497751) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 36076 + ... + 39603.

Almost surely, 2^133497756 is an apocalyptic number.

It is an amenable number.

133497756 is an abundant number, since it is smaller than the sum of its proper divisors (259054404).

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

133497756 is a wasteful number, since it uses less digits than its factorization.

133497756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75703 (or 75691 counting only the distinct ones).

The product of its digits is 476280, while the sum is 45.

The square root of 133497756 is about 11554.1229005061. The cubic root of 133497756 is about 511.0828664011.

The spelling of 133497756 in words is "one hundred thirty-three million, four hundred ninety-seven thousand, seven hundred fifty-six".