133530169 has 2 divisors, whose sum is σ = 133530170. Its totient is φ = 133530168.

The previous prime is 133530143. The next prime is 133530209. The reversal of 133530169 is 961035331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 121881600 + 11648569 = 11040^2 + 3413^2 .

It is an emirp because it is prime and its reverse (961035331) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 133530169 - 2⁹ = 133529657 is a prime.

It is a super-3 number, since 3×133530169³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 133530169.

It is not a weakly prime, because it can be changed into another prime (133530109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66765084 + 66765085.

It is an arithmetic number, because the mean of its divisors is an integer number (66765085).

Almost surely, 2^133530169 is an apocalyptic number.

It is an amenable number.

133530169 is a deficient number, since it is larger than the sum of its proper divisors (1).

133530169 is an equidigital number, since it uses as much as digits as its factorization.

133530169 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7290, while the sum is 31.

The square root of 133530169 is about 11555.5254748540. The cubic root of 133530169 is about 511.1242263683.

The spelling of 133530169 in words is "one hundred thirty-three million, five hundred thirty thousand, one hundred sixty-nine".