2001087 has 48 divisors (see below), whose sum is σ = 3538080. Its totient is φ = 1075200.

The previous prime is 2001079. The next prime is 2001101. The reversal of 2001087 is 7801002.

It is not a de Polignac number, because 2001087 - 2³ = 2001079 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001037) 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 47 ways as a sum of consecutive naturals, for example, 48787 + ... + 48827.

It is an arithmetic number, because the mean of its divisors is an integer number (73710).

2^2001087 is an apocalyptic number.

2001087 is a deficient number, since it is larger than the sum of its proper divisors (1536993).

2001087 is a wasteful number, since it uses less digits than its factorization.

2001087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104 (or 101 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 18.

The square root of 2001087 is about 1414.5978227044. The cubic root of 2001087 is about 126.0149264252.

Adding to 2001087 its reverse (7801002), we get a palindrome (9802089).

The spelling of 2001087 in words is "two million, one thousand, eighty-seven".