563261557 has 2 divisors, whose sum is σ = 563261558. Its totient is φ = 563261556.

The previous prime is 563261551. The next prime is 563261597. The reversal of 563261557 is 755162365.

It is an a-pointer prime, because the next prime (563261597) can be obtained adding 563261557 to its sum of digits (40).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 509224356 + 54037201 = 22566^2 + 7351^2 .

It is a cyclic number.

It is not a de Polignac number, because 563261557 - 2³ = 563261549 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (563261551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 281630778 + 281630779.

It is an arithmetic number, because the mean of its divisors is an integer number (281630779).

Almost surely, 2^563261557 is an apocalyptic number.

It is an amenable number.

563261557 is a deficient number, since it is larger than the sum of its proper divisors (1).

563261557 is an equidigital number, since it uses as much as digits as its factorization.

563261557 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 189000, while the sum is 40.

The square root of 563261557 is about 23733.1320520491. The cubic root of 563261557 is about 825.8541784220.

The spelling of 563261557 in words is "five hundred sixty-three million, two hundred sixty-one thousand, five hundred fifty-seven".