133775165 has 8 divisors (see below), whose sum is σ = 164869080. Its totient is φ = 104127552.

The previous prime is 133775141. The next prime is 133775171. The reversal of 133775165 is 561577331.

It can be written as a sum of positive squares in 4 ways, for example, as 13060996 + 120714169 = 3614^2 + 10987^2 .

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 133775165 - 2¹⁶ = 133709629 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 361370 + ... + 361739.

It is an arithmetic number, because the mean of its divisors is an integer number (20608635).

Almost surely, 2^133775165 is an apocalyptic number.

It is an amenable number.

133775165 is a deficient number, since it is larger than the sum of its proper divisors (31093915).

133775165 is an equidigital number, since it uses as much as digits as its factorization.

133775165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 723151.

The product of its digits is 66150, while the sum is 38.

The square root of 133775165 is about 11566.1214328745. The cubic root of 133775165 is about 511.4366323832.

The spelling of 133775165 in words is "one hundred thirty-three million, seven hundred seventy-five thousand, one hundred sixty-five".