27755109 has 16 divisors (see below), whose sum is σ = 41245440. Its totient is φ = 18446400.

The previous prime is 27755099. The next prime is 27755113. The reversal of 27755109 is 90155772.

It is not a de Polignac number, because 27755109 - 2¹⁵ = 27722341 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27755009) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8509 + ... + 11309.

It is an arithmetic number, because the mean of its divisors is an integer number (2577840).

Almost surely, 2^27755109 is an apocalyptic number.

It is an amenable number.

27755109 is a deficient number, since it is larger than the sum of its proper divisors (13490331).

27755109 is a wasteful number, since it uses less digits than its factorization.

27755109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3177 (or 3171 counting only the distinct ones).

The product of its (nonzero) digits is 22050, while the sum is 36.

The square root of 27755109 is about 5268.3117789288. The cubic root of 27755109 is about 302.7710259122.

The spelling of 27755109 in words is "twenty-seven million, seven hundred fifty-five thousand, one hundred nine".