165264001 has 4 divisors (see below), whose sum is σ = 188873152. Its totient is φ = 141654852.

The previous prime is 165263999. The next prime is 165264023. The reversal of 165264001 is 100462561.

165264001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 165264001 - 2¹ = 165263999 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (165264031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11804565 + ... + 11804578.

It is an arithmetic number, because the mean of its divisors is an integer number (47218288).

Almost surely, 2^165264001 is an apocalyptic number.

It is an amenable number.

165264001 is a deficient number, since it is larger than the sum of its proper divisors (23609151).

165264001 is an equidigital number, since it uses as much as digits as its factorization.

165264001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23609150.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 165264001 is about 12855.5046964326. The cubic root of 165264001 is about 548.7730234925.

Subtracting from 165264001 its product of nonzero digits (1440), we obtain a palindrome (165262561).

The spelling of 165264001 in words is "one hundred sixty-five million, two hundred sixty-four thousand, one".