27779051 has 2 divisors, whose sum is σ = 27779052. Its totient is φ = 27779050.

The previous prime is 27779033. The next prime is 27779053. The reversal of 27779051 is 15097772.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 27779051 - 2⁶ = 27778987 is a prime.

Together with 27779053, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 27778996 and 27779014.

It is not a weakly prime, because it can be changed into another prime (27779053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13889525 + 13889526.

It is an arithmetic number, because the mean of its divisors is an integer number (13889526).

Almost surely, 2^27779051 is an apocalyptic number.

27779051 is a deficient number, since it is larger than the sum of its proper divisors (1).

27779051 is an equidigital number, since it uses as much as digits as its factorization.

27779051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30870, while the sum is 38.

The square root of 27779051 is about 5270.5835540289. The cubic root of 27779051 is about 302.8580592646.

The spelling of 27779051 in words is "twenty-seven million, seven hundred seventy-nine thousand, fifty-one".