133503163 has 2 divisors, whose sum is σ = 133503164. Its totient is φ = 133503162.

The previous prime is 133503119. The next prime is 133503169. The reversal of 133503163 is 361305331.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 133503163 - 2¹⁷ = 133372091 is a prime.

It is not a weakly prime, because it can be changed into another prime (133503169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66751581 + 66751582.

It is an arithmetic number, because the mean of its divisors is an integer number (66751582).

Almost surely, 2^133503163 is an apocalyptic number.

133503163 is a deficient number, since it is larger than the sum of its proper divisors (1).

133503163 is an equidigital number, since it uses as much as digits as its factorization.

133503163 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2430, while the sum is 25.

The square root of 133503163 is about 11554.3568838772. The cubic root of 133503163 is about 511.0897663617.

Adding to 133503163 its reverse (361305331), we get a palindrome (494808494).

The spelling of 133503163 in words is "one hundred thirty-three million, five hundred three thousand, one hundred sixty-three".