133365975 has 12 divisors (see below), whose sum is σ = 220498536. Its totient is φ = 71128480.

The previous prime is 133365971. The next prime is 133366001. The reversal of 133365975 is 579563331.

It is not a de Polignac number, because 133365975 - 2² = 133365971 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133365971) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 889032 + ... + 889181.

It is an arithmetic number, because the mean of its divisors is an integer number (18374878).

Almost surely, 2^133365975 is an apocalyptic number.

133365975 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

133365975 is a deficient number, since it is larger than the sum of its proper divisors (87132561).

133365975 is a wasteful number, since it uses less digits than its factorization.

133365975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1778226 (or 1778221 counting only the distinct ones).

The product of its digits is 255150, while the sum is 42.

The square root of 133365975 is about 11548.4187229248. The cubic root of 133365975 is about 510.9146408892.

The spelling of 133365975 in words is "one hundred thirty-three million, three hundred sixty-five thousand, nine hundred seventy-five".