2004526021 has 2 divisors, whose sum is σ = 2004526022. Its totient is φ = 2004526020.

The previous prime is 2004526019. The next prime is 2004526099. The reversal of 2004526021 is 1206254002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1922822500 + 81703521 = 43850^2 + 9039^2 .

It is a cyclic number.

It is not a de Polignac number, because 2004526021 - 2¹ = 2004526019 is a prime.

Together with 2004526019, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 2004525983 and 2004526001.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2004526001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1002263010 + 1002263011.

It is an arithmetic number, because the mean of its divisors is an integer number (1002263011).

Almost surely, 2^2004526021 is an apocalyptic number.

It is an amenable number.

2004526021 is a deficient number, since it is larger than the sum of its proper divisors (1).

2004526021 is an equidigital number, since it uses as much as digits as its factorization.

2004526021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 2004526021 is about 44771.9334069906. The cubic root of 2004526021 is about 1260.8707387245.

The spelling of 2004526021 in words is "two billion, four million, five hundred twenty-six thousand, twenty-one".