2000815521 has 8 divisors (see below), whose sum is σ = 2724514944. Its totient is φ = 1305496560.

The previous prime is 2000815519. The next prime is 2000815543. The reversal of 2000815521 is 1255180002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2000815521 - 2¹ = 2000815519 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2000815491 and 2000815500.

It is not an unprimeable number, because it can be changed into a prime (2000815511) 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 7 ways as a sum of consecutive naturals, for example, 7094950 + ... + 7095231.

It is an arithmetic number, because the mean of its divisors is an integer number (340564368).

Almost surely, 2^2000815521 is an apocalyptic number.

It is an amenable number.

2000815521 is a deficient number, since it is larger than the sum of its proper divisors (723699423).

2000815521 is a wasteful number, since it uses less digits than its factorization.

2000815521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14190231.

The product of its (nonzero) digits is 800, while the sum is 24.

The square root of 2000815521 is about 44730.4764226808. The cubic root of 2000815521 is about 1260.0922753031.

Adding to 2000815521 its reverse (1255180002), we get a palindrome (3255995523).

The spelling of 2000815521 in words is "two billion, eight hundred fifteen thousand, five hundred twenty-one".