133153409 has 2 divisors, whose sum is σ = 133153410. Its totient is φ = 133153408.

The previous prime is 133153399. The next prime is 133153453. The reversal of 133153409 is 904351331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 111091600 + 22061809 = 10540^2 + 4697^2 .

It is a cyclic number.

It is not a de Polignac number, because 133153409 - 2⁴ = 133153393 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (133153309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66576704 + 66576705.

It is an arithmetic number, because the mean of its divisors is an integer number (66576705).

Almost surely, 2^133153409 is an apocalyptic number.

It is an amenable number.

133153409 is a deficient number, since it is larger than the sum of its proper divisors (1).

133153409 is an equidigital number, since it uses as much as digits as its factorization.

133153409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4860, while the sum is 29.

The square root of 133153409 is about 11539.2118015053. The cubic root of 133153409 is about 510.6430552971.

The spelling of 133153409 in words is "one hundred thirty-three million, one hundred fifty-three thousand, four hundred nine".