133369257 has 8 divisors (see below), whose sum is σ = 203229376. Its totient is φ = 76210992.

The previous prime is 133369237. The next prime is 133369261. The reversal of 133369257 is 752963331.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 133369257 - 2⁸ = 133369001 is a prime.

It is not an unprimeable number, because it can be changed into a prime (133369207) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3175438 + ... + 3175479.

It is an arithmetic number, because the mean of its divisors is an integer number (25403672).

Almost surely, 2^133369257 is an apocalyptic number.

It is an amenable number.

133369257 is a deficient number, since it is larger than the sum of its proper divisors (69860119).

133369257 is an equidigital number, since it uses as much as digits as its factorization.

133369257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6350927.

The product of its digits is 102060, while the sum is 39.

The square root of 133369257 is about 11548.5608194268. The cubic root of 133369257 is about 510.9188318835.

The spelling of 133369257 in words is "one hundred thirty-three million, three hundred sixty-nine thousand, two hundred fifty-seven".