1013563 has 2 divisors, whose sum is σ = 1013564. Its totient is φ = 1013562.

The previous prime is 1013533. The next prime is 1013569. The reversal of 1013563 is 3653101.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1013563 - 2⁵ = 1013531 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1013563.

It is not a weakly prime, because it can be changed into another prime (1013569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 506781 + 506782.

It is an arithmetic number, because the mean of its divisors is an integer number (506782).

2^1013563 is an apocalyptic number.

1013563 is a deficient number, since it is larger than the sum of its proper divisors (1).

1013563 is an equidigital number, since it uses as much as digits as its factorization.

1013563 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 270, while the sum is 19.

The square root of 1013563 is about 1006.7586602558. The cubic root of 1013563 is about 100.4500713191.

Adding to 1013563 its reverse (3653101), we get a palindrome (4666664).

The spelling of 1013563 in words is "one million, thirteen thousand, five hundred sixty-three".