2581424 has 10 divisors (see below), whose sum is σ = 5001540. Its totient is φ = 1290704.

The previous prime is 2581417. The next prime is 2581429. The reversal of 2581424 is 4241852.

It is a happy number.

2581424 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 2581393 and 2581402.

It is not an unprimeable number, because it can be changed into a prime (2581429) 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, 80654 + ... + 80685.

It is an arithmetic number, because the mean of its divisors is an integer number (500154).

2^2581424 is an apocalyptic number.

It is an amenable number.

2581424 is a deficient number, since it is larger than the sum of its proper divisors (2420116).

2581424 is a wasteful number, since it uses less digits than its factorization.

2581424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161347 (or 161341 counting only the distinct ones).

The product of its digits is 2560, while the sum is 26.

The square root of 2581424 is about 1606.6810511113. The cubic root of 2581424 is about 137.1786257563.

The spelling of 2581424 in words is "two million, five hundred eighty-one thousand, four hundred twenty-four".