133055985 has 8 divisors (see below), whose sum is σ = 212889600. Its totient is φ = 70963184.

The previous prime is 133055971. The next prime is 133056017. The reversal of 133055985 is 589550331.

It is a happy number.

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 133055985 - 2⁵ = 133055953 is a prime.

It is a Curzon number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 4435185 + ... + 4435214.

It is an arithmetic number, because the mean of its divisors is an integer number (26611200).

Almost surely, 2^133055985 is an apocalyptic number.

133055985 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

133055985 is a deficient number, since it is larger than the sum of its proper divisors (79833615).

133055985 is an equidigital number, since it uses as much as digits as its factorization.

133055985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8870407.

The product of its (nonzero) digits is 81000, while the sum is 39.

The square root of 133055985 is about 11534.9895968744. The cubic root of 133055985 is about 510.5184846295.

The spelling of 133055985 in words is "one hundred thirty-three million, fifty-five thousand, nine hundred eighty-five".