2568021 has 8 divisors (see below), whose sum is σ = 3604320. Its totient is φ = 1621872.

The previous prime is 2568011. The next prime is 2568023. The reversal of 2568021 is 1208652.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2568021 - 2¹⁰ = 2566997 is a prime.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 2567982 and 2568000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2568023) 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 7 ways as a sum of consecutive naturals, for example, 22470 + ... + 22583.

It is an arithmetic number, because the mean of its divisors is an integer number (450540).

2^2568021 is an apocalyptic number.

It is an amenable number.

2568021 is a deficient number, since it is larger than the sum of its proper divisors (1036299).

2568021 is a wasteful number, since it uses less digits than its factorization.

2568021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45075.

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 2568021 is about 1602.5046021775. The cubic root of 2568021 is about 136.9407988304.

The spelling of 2568021 in words is "two million, five hundred sixty-eight thousand, twenty-one".