2001053 has 4 divisors (see below), whose sum is σ = 2118780. Its totient is φ = 1883328.

The previous prime is 2001049. The next prime is 2001067. The reversal of 2001053 is 3501002.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3501002 = 2 ⋅1750501.

It can be written as a sum of positive squares in 2 ways, for example, as 1194649 + 806404 = 1093^2 + 898^2 .

It is not a de Polignac number, because 2001053 - 2² = 2001049 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001073) 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 3 ways as a sum of consecutive naturals, for example, 58838 + ... + 58871.

It is an arithmetic number, because the mean of its divisors is an integer number (529695).

2^2001053 is an apocalyptic number.

It is an amenable number.

2001053 is a deficient number, since it is larger than the sum of its proper divisors (117727).

2001053 is a wasteful number, since it uses less digits than its factorization.

2001053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117726.

The product of its (nonzero) digits is 30, while the sum is 11.

The square root of 2001053 is about 1414.5858051034. The cubic root of 2001053 is about 126.0142127245.

Adding to 2001053 its reverse (3501002), we get a palindrome (5502055).

The spelling of 2001053 in words is "two million, one thousand, fifty-three".