133492091 has 4 divisors (see below), whose sum is σ = 134024184. Its totient is φ = 132960000.

The previous prime is 133492087. The next prime is 133492097. The reversal of 133492091 is 190294331.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 133492091 - 2² = 133492087 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133492097) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 265670 + ... + 266171.

It is an arithmetic number, because the mean of its divisors is an integer number (33506046).

Almost surely, 2^133492091 is an apocalyptic number.

133492091 is a deficient number, since it is larger than the sum of its proper divisors (532093).

133492091 is an equidigital number, since it uses as much as digits as its factorization.

133492091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 532092.

The product of its (nonzero) digits is 5832, while the sum is 32.

The square root of 133492091 is about 11553.8777473193. The cubic root of 133492091 is about 511.0756370027.

The spelling of 133492091 in words is "one hundred thirty-three million, four hundred ninety-two thousand, ninety-one".