133365511 has 2 divisors, whose sum is σ = 133365512. Its totient is φ = 133365510.

The previous prime is 133365481. The next prime is 133365517. The reversal of 133365511 is 115563331.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 133365511 - 2⁹ = 133364999 is a prime.

It is a super-2 number, since 2×133365511² = 35572719048582242, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 133365511.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133365517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66682755 + 66682756.

It is an arithmetic number, because the mean of its divisors is an integer number (66682756).

Almost surely, 2^133365511 is an apocalyptic number.

133365511 is a deficient number, since it is larger than the sum of its proper divisors (1).

133365511 is an equidigital number, since it uses as much as digits as its factorization.

133365511 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4050, while the sum is 28.

The square root of 133365511 is about 11548.3986335769. The cubic root of 133365511 is about 510.9140483726.

The spelling of 133365511 in words is "one hundred thirty-three million, three hundred sixty-five thousand, five hundred eleven".