5440002540 has 72 divisors (see below), whose sum is σ = 17718874992. Its totient is φ = 1243428480.

The previous prime is 5440002523. The next prime is 5440002553. The reversal of 5440002540 is 452000445.

It is a self number, because there is not a number n which added to its sum of digits gives 5440002540.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 922231 + ... + 928110.

It is an arithmetic number, because the mean of its divisors is an integer number (246095486).

Almost surely, 2^5440002540 is an apocalyptic number.

It is an amenable number.

5440002540 is an abundant number, since it is smaller than the sum of its proper divisors (12278872452).

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

5440002540 is a wasteful number, since it uses less digits than its factorization.

5440002540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1850367 (or 1850358 counting only the distinct ones).

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

The square root of 5440002540 is about 73756.3728771962. The cubic root of 5440002540 is about 1758.7321425874.

Adding to 5440002540 its reverse (452000445), we get a palindrome (5892002985).

The spelling of 5440002540 in words is "five billion, four hundred forty million, two thousand, five hundred forty".