2592721 has 16 divisors (see below), whose sum is σ = 3024000. Its totient is φ = 2204928.

The previous prime is 2592719. The next prime is 2592731. The reversal of 2592721 is 1272952.

It is a cyclic number.

It is not a de Polignac number, because 2592721 - 2¹ = 2592719 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2592721.

It is not an unprimeable number, because it can be changed into a prime (2592731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7255 + ... + 7603.

It is an arithmetic number, because the mean of its divisors is an integer number (189000).

2^2592721 is an apocalyptic number.

It is an amenable number.

2592721 is a deficient number, since it is larger than the sum of its proper divisors (431279).

2592721 is a wasteful number, since it uses less digits than its factorization.

2592721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 408.

The product of its digits is 2520, while the sum is 28.

The square root of 2592721 is about 1610.1928455933. The cubic root of 2592721 is about 137.3784446381.

The spelling of 2592721 in words is "two million, five hundred ninety-two thousand, seven hundred twenty-one".