27655057 has 4 divisors (see below), whose sum is σ = 27795636. Its totient is φ = 27514480.

The previous prime is 27655037. The next prime is 27655091. The reversal of 27655057 is 75055672.

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 26224641 + 1430416 = 5121^2 + 1196^2 .

It is a cyclic number.

It is not a de Polignac number, because 27655057 - 2¹⁹ = 27130769 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27655037) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69994 + ... + 70387.

It is an arithmetic number, because the mean of its divisors is an integer number (6948909).

Almost surely, 2^27655057 is an apocalyptic number.

It is an amenable number.

27655057 is a deficient number, since it is larger than the sum of its proper divisors (140579).

27655057 is a wasteful number, since it uses less digits than its factorization.

27655057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140578.

The product of its (nonzero) digits is 73500, while the sum is 37.

The square root of 27655057 is about 5258.8075644579. The cubic root of 27655057 is about 302.4067768199.

The spelling of 27655057 in words is "twenty-seven million, six hundred fifty-five thousand, fifty-seven".