158563 has 2 divisors, whose sum is σ = 158564. Its totient is φ = 158562.

The previous prime is 158551. The next prime is 158567. The reversal of 158563 is 365851.

It is a strong prime.

It is an emirp because it is prime and its reverse (365851) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-158563 is a prime.

It is not a weakly prime, because it can be changed into another prime (158567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79281 + 79282.

It is an arithmetic number, because the mean of its divisors is an integer number (79282).

2¹⁵⁸⁵⁶³ is an apocalyptic number.

158563 is a deficient number, since it is larger than the sum of its proper divisors (1).

158563 is an equidigital number, since it uses as much as digits as its factorization.

158563 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3600, while the sum is 28.

The square root of 158563 is about 398.1996986438. The cubic root of 158563 is about 54.1253375733.

It can be divided in two parts, 1 and 58563, that added together give a square (58564 = 242²).

The spelling of 158563 in words is "one hundred fifty-eight thousand, five hundred sixty-three".