133894517 has 2 divisors, whose sum is σ = 133894518. Its totient is φ = 133894516.

The previous prime is 133894513. The next prime is 133894531. The reversal of 133894517 is 715498331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 82428241 + 51466276 = 9079^2 + 7174^2 .

It is a cyclic number.

It is not a de Polignac number, because 133894517 - 2² = 133894513 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133894513) 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, 66947258 + 66947259.

It is an arithmetic number, because the mean of its divisors is an integer number (66947259).

Almost surely, 2^133894517 is an apocalyptic number.

It is an amenable number.

133894517 is a deficient number, since it is larger than the sum of its proper divisors (1).

133894517 is an equidigital number, since it uses as much as digits as its factorization.

133894517 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 90720, while the sum is 41.

The square root of 133894517 is about 11571.2798341411. The cubic root of 133894517 is about 511.5886856204.

The spelling of 133894517 in words is "one hundred thirty-three million, eight hundred ninety-four thousand, five hundred seventeen".