2590721 has 4 divisors (see below), whose sum is σ = 2960832. Its totient is φ = 2220612.

The previous prime is 2590717. The next prime is 2590723. The reversal of 2590721 is 1270952.

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 2590721 - 2² = 2590717 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2590723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 185045 + ... + 185058.

It is an arithmetic number, because the mean of its divisors is an integer number (740208).

It is a Proth number, since it is equal to 1265 ⋅ 2¹¹ + 1 and 1265 < 2¹¹.

2^2590721 is an apocalyptic number.

It is an amenable number.

2590721 is a deficient number, since it is larger than the sum of its proper divisors (370111).

2590721 is an equidigital number, since it uses as much as digits as its factorization.

2590721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 370110.

The product of its (nonzero) digits is 1260, while the sum is 26.

The square root of 2590721 is about 1609.5716821565. The cubic root of 2590721 is about 137.3431114151.

The spelling of 2590721 in words is "two million, five hundred ninety thousand, seven hundred twenty-one".