27800051 has 2 divisors, whose sum is σ = 27800052. Its totient is φ = 27800050.

The previous prime is 27799999. The next prime is 27800057. The reversal of 27800051 is 15000872.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27800051 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (27800057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13900025 + 13900026.

It is an arithmetic number, because the mean of its divisors is an integer number (13900026).

Almost surely, 2^27800051 is an apocalyptic number.

27800051 is a deficient number, since it is larger than the sum of its proper divisors (1).

27800051 is an equidigital number, since it uses as much as digits as its factorization.

27800051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 560, while the sum is 23.

The square root of 27800051 is about 5272.5753669341. The cubic root of 27800051 is about 302.9343567747.

The spelling of 27800051 in words is "twenty-seven million, eight hundred thousand, fifty-one".