27516977 has 2 divisors, whose sum is σ = 27516978. Its totient is φ = 27516976.

The previous prime is 27516953. The next prime is 27516989. The reversal of 27516977 is 77961572.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25816561 + 1700416 = 5081^2 + 1304^2 .

It is a cyclic number.

It is not a de Polignac number, because 27516977 - 2⁶ = 27516913 is a prime.

It is not a weakly prime, because it can be changed into another prime (27516677) 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 as a sum of consecutive naturals, namely, 13758488 + 13758489.

It is an arithmetic number, because the mean of its divisors is an integer number (13758489).

Almost surely, 2^27516977 is an apocalyptic number.

It is an amenable number.

27516977 is a deficient number, since it is larger than the sum of its proper divisors (1).

27516977 is an equidigital number, since it uses as much as digits as its factorization.

27516977 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 185220, while the sum is 44.

The square root of 27516977 is about 5245.6626845423. The cubic root of 27516977 is about 301.9026373570.

The spelling of 27516977 in words is "twenty-seven million, five hundred sixteen thousand, nine hundred seventy-seven".