2851 has 2 divisors, whose sum is σ = 2852. Its totient is φ = 2850.
The previous prime is 2843. The next prime is 2857. The reversal of 2851 is 1582.
It is a happy number.
2851 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is a strong prime.
It is a cyclic number.
It is not a de Polignac number, because 2851 - 23 = 2843 is a prime.
It is a pancake number, because a pancake can be divided into 2851 parts by 75 straight cuts.
2851 is a lucky number.
It is a nialpdrome in base 6, base 8 and base 15.
It is not a weakly prime, because it can be changed into another prime (2857) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1425 + 1426.
It is an arithmetic number, because the mean of its divisors is an integer number (1426).
2851 is a deficient number, since it is larger than the sum of its proper divisors (1).
2851 is an equidigital number, since it uses as much as digits as its factorization.
2851 is an evil number, because the sum of its binary digits is even.
The product of its digits is 80, while the sum is 16.
The square root of 2851 is about 53.3947562968. The cubic root of 2851 is about 14.1796574418.
The spelling of 2851 in words is "two thousand, eight hundred fifty-one".
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