2001147 has 8 divisors (see below), whose sum is σ = 2680320. Its totient is φ = 1328040.

The previous prime is 2001127. The next prime is 2001163. The reversal of 2001147 is 7411002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2001147 - 2¹¹ = 1999099 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2001127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 679 + ... + 2112.

It is an arithmetic number, because the mean of its divisors is an integer number (335040).

2^2001147 is an apocalyptic number.

2001147 is a deficient number, since it is larger than the sum of its proper divisors (679173).

2001147 is a wasteful number, since it uses less digits than its factorization.

2001147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3033.

The product of its (nonzero) digits is 56, while the sum is 15.

The square root of 2001147 is about 1414.6190299865. The cubic root of 2001147 is about 126.0161858773.

Adding to 2001147 its reverse (7411002), we get a palindrome (9412149).

The spelling of 2001147 in words is "two million, one thousand, one hundred forty-seven".