133290155 has 4 divisors (see below), whose sum is σ = 159948192. Its totient is φ = 106632120.

The previous prime is 133290151. The next prime is 133290191. The reversal of 133290155 is 551092331.

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

It is not a de Polignac number, because 133290155 - 2² = 133290151 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133290151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13329011 + ... + 13329020.

It is an arithmetic number, because the mean of its divisors is an integer number (39987048).

Almost surely, 2^133290155 is an apocalyptic number.

133290155 is a deficient number, since it is larger than the sum of its proper divisors (26658037).

133290155 is an equidigital number, since it uses as much as digits as its factorization.

133290155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26658036.

The product of its (nonzero) digits is 4050, while the sum is 29.

The square root of 133290155 is about 11545.1355557222. The cubic root of 133290155 is about 510.8178023683.

The spelling of 133290155 in words is "one hundred thirty-three million, two hundred ninety thousand, one hundred fifty-five".