27870055 has 16 divisors (see below), whose sum is σ = 37277280. Its totient is φ = 19878912.

The previous prime is 27870053. The next prime is 27870061. The reversal of 27870055 is 55007872.

It is a cyclic number.

It is not a de Polignac number, because 27870055 - 2¹ = 27870053 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 27870055.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27870053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7014 + ... + 10243.

It is an arithmetic number, because the mean of its divisors is an integer number (2329830).

Almost surely, 2^27870055 is an apocalyptic number.

27870055 is a deficient number, since it is larger than the sum of its proper divisors (9407225).

27870055 is a wasteful number, since it uses less digits than its factorization.

27870055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17298.

The product of its (nonzero) digits is 19600, while the sum is 34.

The square root of 27870055 is about 5279.2096946418. The cubic root of 27870055 is about 303.1884191535.

The spelling of 27870055 in words is "twenty-seven million, eight hundred seventy thousand, fifty-five".