133117571 has 2 divisors, whose sum is σ = 133117572. Its totient is φ = 133117570.

The previous prime is 133117547. The next prime is 133117577. The reversal of 133117571 is 175711331.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 133117571 - 2¹⁸ = 132855427 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (133117577) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66558785 + 66558786.

It is an arithmetic number, because the mean of its divisors is an integer number (66558786).

Almost surely, 2^133117571 is an apocalyptic number.

133117571 is a deficient number, since it is larger than the sum of its proper divisors (1).

133117571 is an equidigital number, since it uses as much as digits as its factorization.

133117571 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2205, while the sum is 29.

The square root of 133117571 is about 11537.6588179752. The cubic root of 133117571 is about 510.5972383004.

The spelling of 133117571 in words is "one hundred thirty-three million, one hundred seventeen thousand, five hundred seventy-one".