133542589 has 2 divisors, whose sum is σ = 133542590. Its totient is φ = 133542588.

The previous prime is 133542587. The next prime is 133542641. The reversal of 133542589 is 985245331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 90535225 + 43007364 = 9515^2 + 6558^2 .

It is a cyclic number.

It is not a de Polignac number, because 133542589 - 2¹ = 133542587 is a prime.

Together with 133542587, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133542581) 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, 66771294 + 66771295.

It is an arithmetic number, because the mean of its divisors is an integer number (66771295).

Almost surely, 2^133542589 is an apocalyptic number.

It is an amenable number.

133542589 is a deficient number, since it is larger than the sum of its proper divisors (1).

133542589 is an equidigital number, since it uses as much as digits as its factorization.

133542589 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 129600, while the sum is 40.

The square root of 133542589 is about 11556.0628676033. The cubic root of 133542589 is about 511.1400728898.

The spelling of 133542589 in words is "one hundred thirty-three million, five hundred forty-two thousand, five hundred eighty-nine".