2001265 has 8 divisors (see below), whose sum is σ = 2744640. Its totient is φ = 1372272.

The previous prime is 2001247. The next prime is 2001269. The reversal of 2001265 is 5621002.

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 2001265 - 2⁹ = 2000753 is a prime.

2001265 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2001269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28555 + ... + 28624.

It is an arithmetic number, because the mean of its divisors is an integer number (343080).

2^2001265 is an apocalyptic number.

It is an amenable number.

2001265 is a deficient number, since it is larger than the sum of its proper divisors (743375).

2001265 is an equidigital number, since it uses as much as digits as its factorization.

2001265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57191.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 2001265 is about 1414.6607367139. The cubic root of 2001265 is about 126.0186627265.

Adding to 2001265 its reverse (5621002), we get a palindrome (7622267).

The spelling of 2001265 in words is "two million, one thousand, two hundred sixty-five".