158645563 has 2 divisors, whose sum is σ = 158645564. Its totient is φ = 158645562.

The previous prime is 158645521. The next prime is 158645579. The reversal of 158645563 is 365546851.

It is a strong prime.

It is an emirp because it is prime and its reverse (365546851) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 158645563 - 2¹⁷ = 158514491 is a prime.

It is not a weakly prime, because it can be changed into another prime (158640563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79322781 + 79322782.

It is an arithmetic number, because the mean of its divisors is an integer number (79322782).

Almost surely, 2^158645563 is an apocalyptic number.

158645563 is a deficient number, since it is larger than the sum of its proper divisors (1).

158645563 is an equidigital number, since it uses as much as digits as its factorization.

158645563 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 432000, while the sum is 43.

The square root of 158645563 is about 12595.4580305759. The cubic root of 158645563 is about 541.3473021183.

The spelling of 158645563 in words is "one hundred fifty-eight million, six hundred forty-five thousand, five hundred sixty-three".