133533503 has 2 divisors, whose sum is σ = 133533504. Its totient is φ = 133533502.

The previous prime is 133533497. The next prime is 133533541. The reversal of 133533503 is 305335331.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 133533503 - 2¹⁴ = 133517119 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133533563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66766751 + 66766752.

It is an arithmetic number, because the mean of its divisors is an integer number (66766752).

Almost surely, 2^133533503 is an apocalyptic number.

133533503 is a deficient number, since it is larger than the sum of its proper divisors (1).

133533503 is an equidigital number, since it uses as much as digits as its factorization.

133533503 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6075, while the sum is 26.

The square root of 133533503 is about 11555.6697339445. The cubic root of 133533503 is about 511.1284802733.

Adding to 133533503 its reverse (305335331), we get a palindrome (438868834).

The spelling of 133533503 in words is "one hundred thirty-three million, five hundred thirty-three thousand, five hundred three".