133173065 has 16 divisors (see below), whose sum is σ = 164513280. Its totient is φ = 103446720.

The previous prime is 133173037. The next prime is 133173077. The reversal of 133173065 is 560371331.

It is a happy number.

It is not a de Polignac number, because 133173065 - 2¹² = 133168969 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21332 + ... + 26858.

It is an arithmetic number, because the mean of its divisors is an integer number (10282080).

Almost surely, 2^133173065 is an apocalyptic number.

It is an amenable number.

133173065 is a deficient number, since it is larger than the sum of its proper divisors (31340215).

133173065 is an equidigital number, since it uses as much as digits as its factorization.

133173065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5672.

The product of its (nonzero) digits is 5670, while the sum is 29.

The square root of 133173065 is about 11540.0634746954. The cubic root of 133173065 is about 510.6681809676.

The spelling of 133173065 in words is "one hundred thirty-three million, one hundred seventy-three thousand, sixty-five".