133545522 has 48 divisors (see below), whose sum is σ = 303750720. Its totient is φ = 39066720.

The previous prime is 133545491. The next prime is 133545527. The reversal of 133545522 is 225545331.

It is a self number, because there is not a number n which added to its sum of digits gives 133545522.

It is not an unprimeable number, because it can be changed into a prime (133545527) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17883 + ... + 24225.

It is an arithmetic number, because the mean of its divisors is an integer number (6328140).

Almost surely, 2^133545522 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 133545522, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (151875360).

133545522 is an abundant number, since it is smaller than the sum of its proper divisors (170205198).

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

133545522 is a wasteful number, since it uses less digits than its factorization.

133545522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6399 (or 6388 counting only the distinct ones).

The product of its digits is 18000, while the sum is 30.

The square root of 133545522 is about 11556.1897699891. The cubic root of 133545522 is about 511.1438149241.

The spelling of 133545522 in words is "one hundred thirty-three million, five hundred forty-five thousand, five hundred twenty-two".