27851 has 2 divisors, whose sum is σ = 27852. Its totient is φ = 27850.

The previous prime is 27847. The next prime is 27883. The reversal of 27851 is 15872.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 27851 - 2² = 27847 is a prime.

It is not a weakly prime, because it can be changed into another prime (27551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13925 + 13926.

It is an arithmetic number, because the mean of its divisors is an integer number (13926).

2²⁷⁸⁵¹ is an apocalyptic number.

27851 is a deficient number, since it is larger than the sum of its proper divisors (1).

27851 is an equidigital number, since it uses as much as digits as its factorization.

27851 is an odious number, because the sum of its binary digits is odd.

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

The square root of 27851 is about 166.8861887635. The cubic root of 27851 is about 30.3119305877.

It can be divided in two parts, 27 and 851, that added together give a palindrome (878).

The spelling of 27851 in words is "twenty-seven thousand, eight hundred fifty-one".