133261885 has 8 divisors (see below), whose sum is σ = 166867200. Its totient is φ = 101974224.

The previous prime is 133261883. The next prime is 133261889. The reversal of 133261885 is 588162331.

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 133261885 - 2¹ = 133261883 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133261883) 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 7 ways as a sum of consecutive naturals, for example, 579285 + ... + 579514.

It is an arithmetic number, because the mean of its divisors is an integer number (20858400).

Almost surely, 2^133261885 is an apocalyptic number.

It is an amenable number.

133261885 is a deficient number, since it is larger than the sum of its proper divisors (33605315).

133261885 is a wasteful number, since it uses less digits than its factorization.

133261885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1158827.

The product of its digits is 34560, while the sum is 37.

The square root of 133261885 is about 11543.9111656319. The cubic root of 133261885 is about 510.7816860716.

The spelling of 133261885 in words is "one hundred thirty-three million, two hundred sixty-one thousand, eight hundred eighty-five".