2871001 has 4 divisors (see below), whose sum is σ = 3281152. Its totient is φ = 2460852.

The previous prime is 2870993. The next prime is 2871013. The reversal of 2871001 is 1001782.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1001782 = 2 ⋅500891.

It is a cyclic number.

It is not a de Polignac number, because 2871001 - 2³ = 2870993 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2871001.

It is not an unprimeable number, because it can be changed into a prime (2871031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 205065 + ... + 205078.

It is an arithmetic number, because the mean of its divisors is an integer number (820288).

2^2871001 is an apocalyptic number.

It is an amenable number.

2871001 is a deficient number, since it is larger than the sum of its proper divisors (410151).

2871001 is an equidigital number, since it uses as much as digits as its factorization.

2871001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 410150.

The product of its (nonzero) digits is 112, while the sum is 19.

The square root of 2871001 is about 1694.4028446624. The cubic root of 2871001 is about 142.1273901458.

Adding to 2871001 its reverse (1001782), we get a palindrome (3872783).

The spelling of 2871001 in words is "two million, eight hundred seventy-one thousand, one".