2588721 has 4 divisors (see below), whose sum is σ = 3451632. Its totient is φ = 1725812.

The previous prime is 2588711. The next prime is 2588723. The reversal of 2588721 is 1278852.

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 not a de Polignac number, because 2588721 - 2⁵ = 2588689 is a prime.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (2588723) 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, 431451 + ... + 431456.

It is an arithmetic number, because the mean of its divisors is an integer number (862908).

2^2588721 is an apocalyptic number.

It is an amenable number.

2588721 is a deficient number, since it is larger than the sum of its proper divisors (862911).

2588721 is an equidigital number, since it uses as much as digits as its factorization.

2588721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 862910.

The product of its digits is 8960, while the sum is 33.

The square root of 2588721 is about 1608.9502789086. The cubic root of 2588721 is about 137.3077600029.

The spelling of 2588721 in words is "two million, five hundred eighty-eight thousand, seven hundred twenty-one".