133440533 has 2 divisors, whose sum is σ = 133440534. Its totient is φ = 133440532.

The previous prime is 133440521. The next prime is 133440557. The reversal of 133440533 is 335044331.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 68525284 + 64915249 = 8278^2 + 8057^2 .

It is a cyclic number.

It is not a de Polignac number, because 133440533 - 2⁶ = 133440469 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133440563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66720266 + 66720267.

It is an arithmetic number, because the mean of its divisors is an integer number (66720267).

Almost surely, 2^133440533 is an apocalyptic number.

It is an amenable number.

133440533 is a deficient number, since it is larger than the sum of its proper divisors (1).

133440533 is an equidigital number, since it uses as much as digits as its factorization.

133440533 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6480, while the sum is 26.

The square root of 133440533 is about 11551.6463328826. The cubic root of 133440533 is about 511.0098317789.

Adding to 133440533 its reverse (335044331), we get a palindrome (468484864).

The spelling of 133440533 in words is "one hundred thirty-three million, four hundred forty thousand, five hundred thirty-three".