2544421 has 16 divisors (see below), whose sum is σ = 2954880. Its totient is φ = 2168320.

The previous prime is 2544403. The next prime is 2544457. The reversal of 2544421 is 1244452.

It is a happy number.

2544421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2544421 - 2⁷ = 2544293 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2544392 and 2544401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2544481) 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 15 ways as a sum of consecutive naturals, for example, 22461 + ... + 22573.

It is an arithmetic number, because the mean of its divisors is an integer number (184680).

2^2544421 is an apocalyptic number.

It is an amenable number.

2544421 is a deficient number, since it is larger than the sum of its proper divisors (410459).

2544421 is a wasteful number, since it uses less digits than its factorization.

2544421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236.

The product of its digits is 1280, while the sum is 22.

The square root of 2544421 is about 1595.1241331006. The cubic root of 2544421 is about 136.5200138821.

Adding to 2544421 its reverse (1244452), we get a palindrome (3788873).

The spelling of 2544421 in words is "two million, five hundred forty-four thousand, four hundred twenty-one".