133565500 has 24 divisors (see below), whose sum is σ = 291708144. Its totient is φ = 53426000.

The previous prime is 133565491. The next prime is 133565501. The reversal of 133565500 is 5565331.

It is a happy number.

133565500 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133565501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 133066 + ... + 134065.

It is an arithmetic number, because the mean of its divisors is an integer number (12154506).

Almost surely, 2^133565500 is an apocalyptic number.

133565500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

133565500 is an abundant number, since it is smaller than the sum of its proper divisors (158142644).

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

133565500 is a wasteful number, since it uses less digits than its factorization.

133565500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267150 (or 267138 counting only the distinct ones).

The product of its (nonzero) digits is 6750, while the sum is 28.

The square root of 133565500 is about 11557.0541229156. The cubic root of 133565500 is about 511.1693021682.

The spelling of 133565500 in words is "one hundred thirty-three million, five hundred sixty-five thousand, five hundred".