2582281 has 4 divisors (see below), whose sum is σ = 2780932. Its totient is φ = 2383632.

The previous prime is 2582257. The next prime is 2582311. The reversal of 2582281 is 1822852.

2582281 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1032256 + 1550025 = 1016^2 + 1245^2 .

It is a cyclic number.

It is not a de Polignac number, because 2582281 - 2⁹ = 2581769 is a prime.

It is a super-2 number, since 2×2582281² = 13336350325922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2582201) 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 in 3 ways as a sum of consecutive naturals, for example, 99306 + ... + 99331.

It is an arithmetic number, because the mean of its divisors is an integer number (695233).

2^2582281 is an apocalyptic number.

It is an amenable number.

2582281 is a deficient number, since it is larger than the sum of its proper divisors (198651).

2582281 is a wasteful number, since it uses less digits than its factorization.

2582281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198650.

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

The square root of 2582281 is about 1606.9477278368. The cubic root of 2582281 is about 137.1938045975.

The spelling of 2582281 in words is "two million, five hundred eighty-two thousand, two hundred eighty-one".