27756049 has 4 divisors (see below), whose sum is σ = 27830836. Its totient is φ = 27681264.

The previous prime is 27756041. The next prime is 27756059. The reversal of 27756049 is 94065772.

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

It can be written as a sum of positive squares in 2 ways, for example, as 14745600 + 13010449 = 3840^2 + 3607^2 .

It is a cyclic number.

It is not a de Polignac number, because 27756049 - 2³ = 27756041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27756041) by changing a digit.

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, 36834 + ... + 37579.

It is an arithmetic number, because the mean of its divisors is an integer number (6957709).

Almost surely, 2^27756049 is an apocalyptic number.

It is an amenable number.

27756049 is a deficient number, since it is larger than the sum of its proper divisors (74787).

27756049 is an equidigital number, since it uses as much as digits as its factorization.

27756049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74786.

The product of its (nonzero) digits is 105840, while the sum is 40.

The square root of 27756049 is about 5268.4009908131. The cubic root of 27756049 is about 302.7744439202.

The spelling of 27756049 in words is "twenty-seven million, seven hundred fifty-six thousand, forty-nine".