2584021 has 8 divisors (see below), whose sum is σ = 2865888. Its totient is φ = 2310000.

The previous prime is 2584009. The next prime is 2584031. The reversal of 2584021 is 1204852.

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

It is not a de Polignac number, because 2584021 - 2¹¹ = 2581973 is a prime.

It is a Duffinian number.

2584021 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 2583983 and 2584001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2584031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1255 + ... + 2596.

It is an arithmetic number, because the mean of its divisors is an integer number (358236).

2^2584021 is an apocalyptic number.

It is an amenable number.

2584021 is a deficient number, since it is larger than the sum of its proper divisors (281867).

2584021 is a wasteful number, since it uses less digits than its factorization.

2584021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3923.

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 2584021 is about 1607.4890357324. The cubic root of 2584021 is about 137.2246124533.

Adding to 2584021 its reverse (1204852), we get a palindrome (3788873).

The spelling of 2584021 in words is "two million, five hundred eighty-four thousand, twenty-one".