2851001 has 2 divisors, whose sum is σ = 2851002. Its totient is φ = 2851000.

The previous prime is 2850997. The next prime is 2851049. The reversal of 2851001 is 1001582.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2808976 + 42025 = 1676^2 + 205^2 .

It is a cyclic number.

It is not a de Polignac number, because 2851001 - 2² = 2850997 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a plaindrome in base 11.

It is not a weakly prime, because it can be changed into another prime (2851061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1425500 + 1425501.

It is an arithmetic number, because the mean of its divisors is an integer number (1425501).

2^2851001 is an apocalyptic number.

It is an amenable number.

2851001 is a deficient number, since it is larger than the sum of its proper divisors (1).

2851001 is an equidigital number, since it uses as much as digits as its factorization.

2851001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 80, while the sum is 17.

The square root of 2851001 is about 1688.4907461991. The cubic root of 2851001 is about 141.7965909967.

Adding to 2851001 its reverse (1001582), we get a palindrome (3852583).

The spelling of 2851001 in words is "two million, eight hundred fifty-one thousand, one".