8081563 has 4 divisors (see below), whose sum is σ = 9236080. Its totient is φ = 6927048.

The previous prime is 8081561. The next prime is 8081569. The reversal of 8081563 is 3651808.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 8081563 - 2¹ = 8081561 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8081561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 577248 + ... + 577261.

It is an arithmetic number, because the mean of its divisors is an integer number (2309020).

Almost surely, 2^8081563 is an apocalyptic number.

8081563 is a deficient number, since it is larger than the sum of its proper divisors (1154517).

8081563 is a wasteful number, since it uses less digits than its factorization.

8081563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1154516.

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 8081563 is about 2842.8089981566. The cubic root of 8081563 is about 200.6773947581.

The spelling of 8081563 in words is "eight million, eighty-one thousand, five hundred sixty-three".