27805255 has 4 divisors (see below), whose sum is σ = 33366312. Its totient is φ = 22244200.

The previous prime is 27805237. The next prime is 27805273. The reversal of 27805255 is 55250872.

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

It is an interprime number because it is at equal distance from previous prime (27805237) and next prime (27805273).

It is not a de Polignac number, because 27805255 - 2⁹ = 27804743 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 27805255.

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 2780521 + ... + 2780530.

It is an arithmetic number, because the mean of its divisors is an integer number (8341578).

Almost surely, 2^27805255 is an apocalyptic number.

27805255 is a deficient number, since it is larger than the sum of its proper divisors (5561057).

27805255 is an equidigital number, since it uses as much as digits as its factorization.

27805255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5561056.

The product of its (nonzero) digits is 28000, while the sum is 34.

The square root of 27805255 is about 5273.0688408175. The cubic root of 27805255 is about 302.9532580833.

The spelling of 27805255 in words is "twenty-seven million, eight hundred five thousand, two hundred fifty-five".