27285563 has 2 divisors, whose sum is σ = 27285564. Its totient is φ = 27285562.

The previous prime is 27285551. The next prime is 27285571. The reversal of 27285563 is 36558272.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 27285563 - 2⁴ = 27285547 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (27285523) 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 as a sum of consecutive naturals, namely, 13642781 + 13642782.

It is an arithmetic number, because the mean of its divisors is an integer number (13642782).

Almost surely, 2^27285563 is an apocalyptic number.

27285563 is a deficient number, since it is larger than the sum of its proper divisors (1).

27285563 is an equidigital number, since it uses as much as digits as its factorization.

27285563 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 100800, while the sum is 38.

The square root of 27285563 is about 5223.5584614322. The cubic root of 27285563 is about 301.0539338166.

The spelling of 27285563 in words is "twenty-seven million, two hundred eighty-five thousand, five hundred sixty-three".