2000521 has 2 divisors, whose sum is σ = 2000522. Its totient is φ = 2000520.

The previous prime is 2000519. The next prime is 2000539. The reversal of 2000521 is 1250002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1071225 + 929296 = 1035^2 + 964^2 .

It is a cyclic number.

It is not a de Polignac number, because 2000521 - 2¹ = 2000519 is a prime.

Together with 2000519, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 2000498 and 2000507.

It is not a weakly prime, because it can be changed into another prime (2000221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1000260 + 1000261.

It is an arithmetic number, because the mean of its divisors is an integer number (1000261).

2^2000521 is an apocalyptic number.

It is an amenable number.

2000521 is a deficient number, since it is larger than the sum of its proper divisors (1).

2000521 is an equidigital number, since it uses as much as digits as its factorization.

2000521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20, while the sum is 10.

The square root of 2000521 is about 1414.3977516950. The cubic root of 2000521 is about 126.0030443541.

Adding to 2000521 its reverse (1250002), we get a palindrome (3250523).

The spelling of 2000521 in words is "two million, five hundred twenty-one", and thus it is an aban number.