2005532021 has 2 divisors, whose sum is σ = 2005532022. Its totient is φ = 2005532020.

The previous prime is 2005532017. The next prime is 2005532029. The reversal of 2005532021 is 1202355002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1344322225 + 661209796 = 36665^2 + 25714^2 .

It is a cyclic number.

It is not a de Polignac number, because 2005532021 - 2² = 2005532017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2005531984 and 2005532002.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2005532029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1002766010 + 1002766011.

It is an arithmetic number, because the mean of its divisors is an integer number (1002766011).

Almost surely, 2^2005532021 is an apocalyptic number.

It is an amenable number.

2005532021 is a deficient number, since it is larger than the sum of its proper divisors (1).

2005532021 is an equidigital number, since it uses as much as digits as its factorization.

2005532021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 2005532021 is about 44783.1667147378. The cubic root of 2005532021 is about 1261.0816321086.

Adding to 2005532021 its reverse (1202355002), we get a palindrome (3207887023).

The spelling of 2005532021 in words is "two billion, five million, five hundred thirty-two thousand, twenty-one".