133522533 has 8 divisors (see below), whose sum is σ = 197811200. Its totient is φ = 89015004.

The previous prime is 133522531. The next prime is 133522553. The reversal of 133522533 is 335225331.

133522533 is a `hidden beast` number, since 133 + 522 + 5 + 3 + 3 = 666.

It is not a de Polignac number, because 133522533 - 2¹ = 133522531 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 4945279 = 133522533 / (1 + 3 + 3 + 5 + 2 + 2 + 5 + 3 + 3).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 133522497 and 133522506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133522531) 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, 2472613 + ... + 2472666.

It is an arithmetic number, because the mean of its divisors is an integer number (24726400).

Almost surely, 2^133522533 is an apocalyptic number.

It is an amenable number.

133522533 is a deficient number, since it is larger than the sum of its proper divisors (64288667).

133522533 is an equidigital number, since it uses as much as digits as its factorization.

133522533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4945288 (or 4945282 counting only the distinct ones).

The product of its digits is 8100, while the sum is 27.

The square root of 133522533 is about 11555.1950654240. The cubic root of 133522533 is about 511.1144832043.

Adding to 133522533 its reverse (335225331), we get a palindrome (468747864).

The spelling of 133522533 in words is "one hundred thirty-three million, five hundred twenty-two thousand, five hundred thirty-three".