2001285 has 48 divisors (see below), whose sum is σ = 4088448. Its totient is φ = 892800.

The previous prime is 2001281. The next prime is 2001313. The reversal of 2001285 is 5821002.

It is not a de Polignac number, because 2001285 - 2² = 2001281 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001281) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6280 + ... + 6590.

It is an arithmetic number, because the mean of its divisors is an integer number (85176).

2^2001285 is an apocalyptic number.

It is an amenable number.

2001285 is an abundant number, since it is smaller than the sum of its proper divisors (2087163).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2001285 is a wasteful number, since it uses less digits than its factorization.

2001285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 346 (or 343 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 2001285 is about 1414.6678055289. The cubic root of 2001285 is about 126.0190825218.

Adding to 2001285 its reverse (5821002), we get a palindrome (7822287).

It can be divided in two parts, 200 and 1285, that added together give a triangular number (1485 = T₅₄).

The spelling of 2001285 in words is "two million, one thousand, two hundred eighty-five".