133115533 has 8 divisors (see below), whose sum is σ = 135922752. Its totient is φ = 130332576.

The previous prime is 133115527. The next prime is 133115551. The reversal of 133115533 is 335511331.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 133115533 - 2²⁵ = 99561101 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 133115498 and 133115507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133118533) 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, 5241 + ... + 17137.

It is an arithmetic number, because the mean of its divisors is an integer number (16990344).

Almost surely, 2^133115533 is an apocalyptic number.

It is an amenable number.

133115533 is a deficient number, since it is larger than the sum of its proper divisors (2807219).

133115533 is a wasteful number, since it uses less digits than its factorization.

133115533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12131.

The product of its digits is 2025, while the sum is 25.

The square root of 133115533 is about 11537.5704981595. The cubic root of 133115533 is about 510.5946325775.

Adding to 133115533 its reverse (335511331), we get a palindrome (468626864).

The spelling of 133115533 in words is "one hundred thirty-three million, one hundred fifteen thousand, five hundred thirty-three".