133169 has 2 divisors, whose sum is σ = 133170. Its totient is φ = 133168.

The previous prime is 133157. The next prime is 133183. The reversal of 133169 is 961331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 113569 + 19600 = 337^2 + 140^2 .

It is a cyclic number.

It is not a de Polignac number, because 133169 - 2⁴ = 133153 is a prime.

It is a super-2 number, since 2×133169² = 35467965122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (133109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66584 + 66585.

It is an arithmetic number, because the mean of its divisors is an integer number (66585).

2¹³³¹⁶⁹ is an apocalyptic number.

It is an amenable number.

133169 is a deficient number, since it is larger than the sum of its proper divisors (1).

133169 is an equidigital number, since it uses as much as digits as its factorization.

133169 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 486, while the sum is 23.

The square root of 133169 is about 364.9232796082. The cubic root of 133169 is about 51.0662985004.

The spelling of 133169 in words is "one hundred thirty-three thousand, one hundred sixty-nine".