27643055 has 12 divisors (see below), whose sum is σ = 36462216. Its totient is φ = 20103600.

The previous prime is 27643039. The next prime is 27643087. The reversal of 27643055 is 55034672.

It is not a de Polignac number, because 27643055 - 2⁴ = 27643039 is a prime.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22241 + ... + 23450.

It is an arithmetic number, because the mean of its divisors is an integer number (3038518).

Almost surely, 2^27643055 is an apocalyptic number.

27643055 is a deficient number, since it is larger than the sum of its proper divisors (8819161).

27643055 is a wasteful number, since it uses less digits than its factorization.

27643055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45718 (or 45707 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 32.

The square root of 27643055 is about 5257.6663074029. Note that the first 3 decimals coincide. The cubic root of 27643055 is about 302.3630233837.

The spelling of 27643055 in words is "twenty-seven million, six hundred forty-three thousand, fifty-five".