27256563 has 6 divisors (see below), whose sum is σ = 39370604. Its totient is φ = 18171036.

The previous prime is 27256553. The next prime is 27256577. The reversal of 27256563 is 36565272.

It is a happy number.

It is not a de Polignac number, because 27256563 - 2⁶ = 27256499 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27256553) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1514245 + ... + 1514262.

Almost surely, 2^27256563 is an apocalyptic number.

27256563 is a deficient number, since it is larger than the sum of its proper divisors (12114041).

27256563 is a wasteful number, since it uses less digits than its factorization.

27256563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3028513 (or 3028510 counting only the distinct ones).

The product of its digits is 75600, while the sum is 36.

The square root of 27256563 is about 5220.7818380009. The cubic root of 27256563 is about 300.9472393111.

The spelling of 27256563 in words is "twenty-seven million, two hundred fifty-six thousand, five hundred sixty-three".