8540563 has 2 divisors, whose sum is σ = 8540564. Its totient is φ = 8540562.

The previous prime is 8540551. The next prime is 8540569. The reversal of 8540563 is 3650458.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 8540563 - 2¹³ = 8532371 is a prime.

It is not a weakly prime, because it can be changed into another prime (8540569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4270281 + 4270282.

It is an arithmetic number, because the mean of its divisors is an integer number (4270282).

Almost surely, 2^8540563 is an apocalyptic number.

8540563 is a deficient number, since it is larger than the sum of its proper divisors (1).

8540563 is an equidigital number, since it uses as much as digits as its factorization.

8540563 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 8540563 is about 2922.4241649699. The cubic root of 8540563 is about 204.4068756998.

The spelling of 8540563 in words is "eight million, five hundred forty thousand, five hundred sixty-three".