201164565 has 16 divisors (see below), whose sum is σ = 367843968. Its totient is φ = 91960896.

The previous prime is 201164563. The next prime is 201164591. The reversal of 201164565 is 565461102.

It is not a de Polignac number, because 201164565 - 2¹ = 201164563 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201164563) 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 15 ways as a sum of consecutive naturals, for example, 957822 + ... + 958031.

It is an arithmetic number, because the mean of its divisors is an integer number (22990248).

Almost surely, 2^201164565 is an apocalyptic number.

It is an amenable number.

201164565 is a deficient number, since it is larger than the sum of its proper divisors (166679403).

201164565 is a wasteful number, since it uses less digits than its factorization.

201164565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1915868.

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 201164565 is about 14183.2494513775. The cubic root of 201164565 is about 585.9364212105.

The spelling of 201164565 in words is "two hundred one million, one hundred sixty-four thousand, five hundred sixty-five".