3563321081 has 2 divisors, whose sum is σ = 3563321082. Its totient is φ = 3563321080.

The previous prime is 3563321053. The next prime is 3563321129. The reversal of 3563321081 is 1801233653.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3031603600 + 531717481 = 55060^2 + 23059^2 .

It is a cyclic number.

It is not a de Polignac number, because 3563321081 - 2²² = 3559126777 is a prime.

It is a super-2 number, since 2×3563321081² = 25394514252598017122, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (3563321011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1781660540 + 1781660541.

It is an arithmetic number, because the mean of its divisors is an integer number (1781660541).

Almost surely, 2^3563321081 is an apocalyptic number.

It is an amenable number.

3563321081 is a deficient number, since it is larger than the sum of its proper divisors (1).

3563321081 is an equidigital number, since it uses as much as digits as its factorization.

3563321081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 3563321081 is about 59693.5597950064. The cubic root of 3563321081 is about 1527.3960122180.

The spelling of 3563321081 in words is "three billion, five hundred sixty-three million, three hundred twenty-one thousand, eighty-one".