2581116 has 24 divisors (see below), whose sum is σ = 6231120. Its totient is φ = 830592.

The previous prime is 2581097. The next prime is 2581121. The reversal of 2581116 is 6111852.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3361 + ... + 4056.

It is an arithmetic number, because the mean of its divisors is an integer number (259630).

2^2581116 is an apocalyptic number.

It is an amenable number.

2581116 is an abundant number, since it is smaller than the sum of its proper divisors (3650004).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2581116 is a wasteful number, since it uses less digits than its factorization.

2581116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7453 (or 7451 counting only the distinct ones).

The product of its digits is 480, while the sum is 24.

The square root of 2581116 is about 1606.5851984878. The cubic root of 2581116 is about 137.1731697628.

Adding to 2581116 its reverse (6111852), we get a palindrome (8692968).

The spelling of 2581116 in words is "two million, five hundred eighty-one thousand, one hundred sixteen".