133297513 has 2 divisors, whose sum is σ = 133297514. Its totient is φ = 133297512.

The previous prime is 133297511. The next prime is 133297589. The reversal of 133297513 is 315792331.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 69089344 + 64208169 = 8312^2 + 8013^2 .

It is a cyclic number.

It is not a de Polignac number, because 133297513 - 2¹ = 133297511 is a prime.

Together with 133297511, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (133297511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66648756 + 66648757.

It is an arithmetic number, because the mean of its divisors is an integer number (66648757).

Almost surely, 2^133297513 is an apocalyptic number.

It is an amenable number.

133297513 is a deficient number, since it is larger than the sum of its proper divisors (1).

133297513 is an equidigital number, since it uses as much as digits as its factorization.

133297513 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17010, while the sum is 34.

The square root of 133297513 is about 11545.4542136721. The cubic root of 133297513 is about 510.8272017327.

The spelling of 133297513 in words is "one hundred thirty-three million, two hundred ninety-seven thousand, five hundred thirteen".