27056569 has 2 divisors, whose sum is σ = 27056570. Its totient is φ = 27056568.

The previous prime is 27056567. The next prime is 27056581. The reversal of 27056569 is 96565072.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17539344 + 9517225 = 4188^2 + 3085^2 .

It is a cyclic number.

It is not a de Polignac number, because 27056569 - 2¹ = 27056567 is a prime.

It is a super-2 number, since 2×27056569² = 1464115852103522, which contains 22 as substring.

Together with 27056567, it forms a pair of twin primes.

It is an alternating number because its digits alternate between even and odd.

It is not a weakly prime, because it can be changed into another prime (27056567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13528284 + 13528285.

It is an arithmetic number, because the mean of its divisors is an integer number (13528285).

Almost surely, 2^27056569 is an apocalyptic number.

It is an amenable number.

27056569 is a deficient number, since it is larger than the sum of its proper divisors (1).

27056569 is an equidigital number, since it uses as much as digits as its factorization.

27056569 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 113400, while the sum is 40.

The square root of 27056569 is about 5201.5929290939. The cubic root of 27056569 is about 300.2093686634.

The spelling of 27056569 in words is "twenty-seven million, fifty-six thousand, five hundred sixty-nine".