133115091 has 16 divisors (see below), whose sum is σ = 179969664. Its totient is φ = 87511104.

The previous prime is 133115077. The next prime is 133115093. The reversal of 133115091 is 190511331.

It is not a de Polignac number, because 133115091 - 2¹³ = 133106899 is a prime.

It is not an unprimeable number, because it can be changed into a prime (133115093) 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, 66000 + ... + 67986.

It is an arithmetic number, because the mean of its divisors is an integer number (11248104).

Almost surely, 2^133115091 is an apocalyptic number.

133115091 is a deficient number, since it is larger than the sum of its proper divisors (46854573).

133115091 is a wasteful number, since it uses less digits than its factorization.

133115091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2290.

The product of its (nonzero) digits is 405, while the sum is 24.

The square root of 133115091 is about 11537.5513433310. The cubic root of 133115091 is about 510.5940674467.

The spelling of 133115091 in words is "one hundred thirty-three million, one hundred fifteen thousand, ninety-one".