133791355 has 8 divisors (see below), whose sum is σ = 166086000. Its totient is φ = 103342176.

The previous prime is 133791353. The next prime is 133791379. The reversal of 133791355 is 553197331.

133791355 = T₇₃₁₃ + T₇₃₁₄ + ... + T₇₃₁₇.

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

It is a cyclic number.

It is not a de Polignac number, because 133791355 - 2¹ = 133791353 is a prime.

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 7 ways as a sum of consecutive naturals, for example, 461205 + ... + 461494.

It is an arithmetic number, because the mean of its divisors is an integer number (20760750).

Almost surely, 2^133791355 is an apocalyptic number.

133791355 is a deficient number, since it is larger than the sum of its proper divisors (32294645).

133791355 is an equidigital number, since it uses as much as digits as its factorization.

133791355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 922733.

The product of its digits is 42525, while the sum is 37.

The square root of 133791355 is about 11566.8213005994. The cubic root of 133791355 is about 511.4572635795.

The spelling of 133791355 in words is "one hundred thirty-three million, seven hundred ninety-one thousand, three hundred fifty-five".