27660553 has 2 divisors, whose sum is σ = 27660554. Its totient is φ = 27660552.

The previous prime is 27660539. The next prime is 27660569. The reversal of 27660553 is 35506672.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27123264 + 537289 = 5208^2 + 733^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27660553 is a prime.

It is not a weakly prime, because it can be changed into another prime (27660533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13830276 + 13830277.

It is an arithmetic number, because the mean of its divisors is an integer number (13830277).

Almost surely, 2^27660553 is an apocalyptic number.

It is an amenable number.

27660553 is a deficient number, since it is larger than the sum of its proper divisors (1).

27660553 is an equidigital number, since it uses as much as digits as its factorization.

27660553 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 37800, while the sum is 34.

The square root of 27660553 is about 5259.3300904203. The cubic root of 27660553 is about 302.4268083287.

The spelling of 27660553 in words is "twenty-seven million, six hundred sixty thousand, five hundred fifty-three".