1158563 has 16 divisors (see below), whose sum is σ = 1443840. Its totient is φ = 907200.

The previous prime is 1158551. The next prime is 1158569. The reversal of 1158563 is 3658511.

It is not a de Polignac number, because 1158563 - 2⁸ = 1158307 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1158569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3983 + ... + 4263.

It is an arithmetic number, because the mean of its divisors is an integer number (90240).

2^1158563 is an apocalyptic number.

1158563 is a deficient number, since it is larger than the sum of its proper divisors (285277).

1158563 is a wasteful number, since it uses less digits than its factorization.

1158563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 338.

The product of its digits is 3600, while the sum is 29.

The square root of 1158563 is about 1076.3656441935. The cubic root of 1158563 is about 105.0283521320.

The spelling of 1158563 in words is "one million, one hundred fifty-eight thousand, five hundred sixty-three".