133020533 has 4 divisors (see below), whose sum is σ = 133282380. Its totient is φ = 132758688.

The previous prime is 133020499. The next prime is 133020541. The reversal of 133020533 is 335020331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 335020331 = 19 ⋅17632649.

It can be written as a sum of positive squares in 2 ways, for example, as 56580484 + 76440049 = 7522^2 + 8743^2 .

It is a cyclic number.

It is not a de Polignac number, because 133020533 - 2²⁴ = 116243317 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133020553) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 130160 + ... + 131177.

It is an arithmetic number, because the mean of its divisors is an integer number (33320595).

Almost surely, 2^133020533 is an apocalyptic number.

It is an amenable number.

133020533 is a deficient number, since it is larger than the sum of its proper divisors (261847).

133020533 is an equidigital number, since it uses as much as digits as its factorization.

133020533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261846.

The product of its (nonzero) digits is 810, while the sum is 20.

The square root of 133020533 is about 11533.4527787649. The cubic root of 133020533 is about 510.4731390330.

Adding to 133020533 its reverse (335020331), we get a palindrome (468040864).

The spelling of 133020533 in words is "one hundred thirty-three million, twenty thousand, five hundred thirty-three".