2851081 has 2 divisors, whose sum is σ = 2851082. Its totient is φ = 2851080.

The previous prime is 2851061. The next prime is 2851091. The reversal of 2851081 is 1801582.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2755600 + 95481 = 1660^2 + 309^2 .

It is a cyclic number.

It is not a de Polignac number, because 2851081 - 2⁵ = 2851049 is a prime.

It is a super-2 number, since 2×2851081² = 16257325737122, which contains 22 as substring.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (2851001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1425540 + 1425541.

It is an arithmetic number, because the mean of its divisors is an integer number (1425541).

2^2851081 is an apocalyptic number.

It is an amenable number.

2851081 is a deficient number, since it is larger than the sum of its proper divisors (1).

2851081 is an equidigital number, since it uses as much as digits as its factorization.

2851081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 640, while the sum is 25.

The square root of 2851081 is about 1688.5144358281. The cubic root of 2851081 is about 141.7979172702.

The spelling of 2851081 in words is "two million, eight hundred fifty-one thousand, eighty-one".