2881001 has 4 divisors (see below), whose sum is σ = 2891904. Its totient is φ = 2870100.

The previous prime is 2880991. The next prime is 2881009. The reversal of 2881001 is 1001882.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2881001 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2881009) 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, 5045 + ... + 5586.

It is an arithmetic number, because the mean of its divisors is an integer number (722976).

2^2881001 is an apocalyptic number.

It is an amenable number.

2881001 is a deficient number, since it is larger than the sum of its proper divisors (10903).

2881001 is a wasteful number, since it uses less digits than its factorization.

2881001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10902.

The product of its (nonzero) digits is 128, while the sum is 20.

The square root of 2881001 is about 1697.3511716790. The cubic root of 2881001 is about 142.2922138360.

Adding to 2881001 its reverse (1001882), we get a palindrome (3882883).

The spelling of 2881001 in words is "two million, eight hundred eighty-one thousand, one".