1563340241 has 2 divisors, whose sum is σ = 1563340242. Its totient is φ = 1563340240.

The previous prime is 1563340237. The next prime is 1563340253. The reversal of 1563340241 is 1420433651.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1404075841 + 159264400 = 37471^2 + 12620^2 .

It is a cyclic number.

It is not a de Polignac number, because 1563340241 - 2² = 1563340237 is a prime.

It is not a weakly prime, because it can be changed into another prime (1563340211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 781670120 + 781670121.

It is an arithmetic number, because the mean of its divisors is an integer number (781670121).

Almost surely, 2^1563340241 is an apocalyptic number.

It is an amenable number.

1563340241 is a deficient number, since it is larger than the sum of its proper divisors (1).

1563340241 is an equidigital number, since it uses as much as digits as its factorization.

1563340241 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 1563340241 is about 39539.0976250091. The cubic root of 1563340241 is about 1160.6051739692.

Adding to 1563340241 its reverse (1420433651), we get a palindrome (2983773892).

The spelling of 1563340241 in words is "one billion, five hundred sixty-three million, three hundred forty thousand, two hundred forty-one".