2256851 has 2 divisors, whose sum is σ = 2256852. Its totient is φ = 2256850.

The previous prime is 2256847. The next prime is 2256857. The reversal of 2256851 is 1586522.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2256851 - 2² = 2256847 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2256857) 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, 1128425 + 1128426.

It is an arithmetic number, because the mean of its divisors is an integer number (1128426).

2^2256851 is an apocalyptic number.

2256851 is a deficient number, since it is larger than the sum of its proper divisors (1).

2256851 is an equidigital number, since it uses as much as digits as its factorization.

2256851 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4800, while the sum is 29.

The square root of 2256851 is about 1502.2819309304. The cubic root of 2256851 is about 131.1699327230.

The spelling of 2256851 in words is "two million, two hundred fifty-six thousand, eight hundred fifty-one".