2540544 has 44 divisors (see below), whose sum is σ = 6779664. Its totient is φ = 845824.

The previous prime is 2540539. The next prime is 2540563. The reversal of 2540544 is 4450452.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2659 + ... + 3485.

2^2540544 is an apocalyptic number.

2540544 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2540544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3389832).

2540544 is an abundant number, since it is smaller than the sum of its proper divisors (4239120).

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

2540544 is an equidigital number, since it uses as much as digits as its factorization.

2540544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 850 (or 832 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 24.

The square root of 2540544 is about 1593.9084038928. The cubic root of 2540544 is about 136.4506389435.

Adding to 2540544 its reverse (4450452), we get a palindrome (6990996).

The spelling of 2540544 in words is "two million, five hundred forty thousand, five hundred forty-four".