133791357 has 16 divisors (see below), whose sum is σ = 204112512. Its totient is φ = 76362240.

The previous prime is 133791353. The next prime is 133791379. The reversal of 133791357 is 753197331.

It is not a de Polignac number, because 133791357 - 2² = 133791353 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133791353) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17257 + ... + 23777.

It is an arithmetic number, because the mean of its divisors is an integer number (12757032).

Almost surely, 2^133791357 is an apocalyptic number.

It is an amenable number.

133791357 is a deficient number, since it is larger than the sum of its proper divisors (70321155).

133791357 is an equidigital number, since it uses as much as digits as its factorization.

133791357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7508.

The product of its digits is 59535, while the sum is 39.

The square root of 133791357 is about 11566.8213870536. The cubic root of 133791357 is about 511.4572661281.

The spelling of 133791357 in words is "one hundred thirty-three million, seven hundred ninety-one thousand, three hundred fifty-seven".