1143563 has 2 divisors, whose sum is σ = 1143564. Its totient is φ = 1143562.

The previous prime is 1143551. The next prime is 1143577. The reversal of 1143563 is 3653411.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1143563 - 2¹⁰ = 1142539 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1143763) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 571781 + 571782.

It is an arithmetic number, because the mean of its divisors is an integer number (571782).

2^1143563 is an apocalyptic number.

1143563 is a deficient number, since it is larger than the sum of its proper divisors (1).

1143563 is an equidigital number, since it uses as much as digits as its factorization.

1143563 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1080, while the sum is 23.

The square root of 1143563 is about 1069.3750511397. The cubic root of 1143563 is about 104.5731118440.

Adding to 1143563 its reverse (3653411), we get a palindrome (4796974).

The spelling of 1143563 in words is "one million, one hundred forty-three thousand, five hundred sixty-three".