2828521 has 2 divisors, whose sum is σ = 2828522. Its totient is φ = 2828520.

The previous prime is 2828491. The next prime is 2828543. The reversal of 2828521 is 1258282.

2828521 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2359296 + 469225 = 1536^2 + 685^2 .

It is a cyclic number.

It is not a de Polignac number, because 2828521 - 2¹⁵ = 2795753 is a prime.

2828521 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 2828521.

It is not a weakly prime, because it can be changed into another prime (2823521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1414260 + 1414261.

It is an arithmetic number, because the mean of its divisors is an integer number (1414261).

2^2828521 is an apocalyptic number.

It is an amenable number.

2828521 is a deficient number, since it is larger than the sum of its proper divisors (1).

2828521 is an equidigital number, since it uses as much as digits as its factorization.

2828521 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2560, while the sum is 28.

The square root of 2828521 is about 1681.8207395558. The cubic root of 2828521 is about 141.4229208076.

The spelling of 2828521 in words is "two million, eight hundred twenty-eight thousand, five hundred twenty-one".