133505365 has 8 divisors (see below), whose sum is σ = 183093120. Its totient is φ = 91546512.

The previous prime is 133505353. The next prime is 133505387. The reversal of 133505365 is 563505331.

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 133505365 - 2¹⁵ = 133472597 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, 1907185 + ... + 1907254.

It is an arithmetic number, because the mean of its divisors is an integer number (22886640).

Almost surely, 2^133505365 is an apocalyptic number.

It is an amenable number.

133505365 is a deficient number, since it is larger than the sum of its proper divisors (49587755).

133505365 is an equidigital number, since it uses as much as digits as its factorization.

133505365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3814451.

The product of its (nonzero) digits is 20250, while the sum is 31.

The square root of 133505365 is about 11554.4521722148. The cubic root of 133505365 is about 511.0925763162.

The spelling of 133505365 in words is "one hundred thirty-three million, five hundred five thousand, three hundred sixty-five".