2000000521 has 4 divisors (see below), whose sum is σ = 2010363412. Its totient is φ = 1989637632.

The previous prime is 2000000507. The next prime is 2000000531. The reversal of 2000000521 is 1250000002.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 971194896 + 1028805625 = 31164^2 + 32075^2 .

It is a cyclic number.

It is not a de Polignac number, because 2000000521 - 2⁷ = 2000000393 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2000000498 and 2000000507.

It is not an unprimeable number, because it can be changed into a prime (2000000531) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5181156 + ... + 5181541.

It is an arithmetic number, because the mean of its divisors is an integer number (502590853).

Almost surely, 2^2000000521 is an apocalyptic number.

It is an amenable number.

2000000521 is a deficient number, since it is larger than the sum of its proper divisors (10362891).

2000000521 is a wasteful number, since it uses less digits than its factorization.

2000000521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10362890.

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

The square root of 2000000521 is about 44721.3653749525. The cubic root of 2000000521 is about 1259.9211592980.

Adding to 2000000521 its reverse (1250000002), we get a palindrome (3250000523).

The spelling of 2000000521 in words is "two billion, five hundred twenty-one", and thus it is an aban number.