2085857 has 2 divisors, whose sum is σ = 2085858. Its totient is φ = 2085856.

The previous prime is 2085841. The next prime is 2085869. The reversal of 2085857 is 7585802.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2027776 + 58081 = 1424^2 + 241^2 .

It is a cyclic number.

It is not a de Polignac number, because 2085857 - 2⁴ = 2085841 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2085257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1042928 + 1042929.

It is an arithmetic number, because the mean of its divisors is an integer number (1042929).

2^2085857 is an apocalyptic number.

It is an amenable number.

2085857 is a deficient number, since it is larger than the sum of its proper divisors (1).

2085857 is an equidigital number, since it uses as much as digits as its factorization.

2085857 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 22400, while the sum is 35.

The square root of 2085857 is about 1444.2496321620. The cubic root of 2085857 is about 127.7697888445.

Subtracting 2085857 from its reverse (7585802), we obtain a palindrome (5499945).

The spelling of 2085857 in words is "two million, eighty-five thousand, eight hundred fifty-seven".