3563261561 has 2 divisors, whose sum is σ = 3563261562. Its totient is φ = 3563261560.

The previous prime is 3563261519. The next prime is 3563261573. The reversal of 3563261561 is 1651623653.

3563261561 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3003040000 + 560221561 = 54800^2 + 23669^2 .

It is a cyclic number.

It is not a de Polignac number, because 3563261561 - 2²² = 3559067257 is a prime.

It is not a weakly prime, because it can be changed into another prime (3563261161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1781630780 + 1781630781.

It is an arithmetic number, because the mean of its divisors is an integer number (1781630781).

Almost surely, 2^3563261561 is an apocalyptic number.

It is an amenable number.

3563261561 is a deficient number, since it is larger than the sum of its proper divisors (1).

3563261561 is an equidigital number, since it uses as much as digits as its factorization.

3563261561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 97200, while the sum is 38.

The square root of 3563261561 is about 59693.0612466809. The cubic root of 3563261561 is about 1527.3875078748.

The spelling of 3563261561 in words is "three billion, five hundred sixty-three million, two hundred sixty-one thousand, five hundred sixty-one".