5581312540 has 48 divisors (see below), whose sum is σ = 12119224320. Its totient is φ = 2156869440.

The previous prime is 5581312531. The next prime is 5581312559. The reversal of 5581312540 is 452131855.

It is a super-2 number, since 2×5581312540² = 62302099338322503200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 5581312496 and 5581312505.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 376509 + ... + 391051.

It is an arithmetic number, because the mean of its divisors is an integer number (252483840).

Almost surely, 2^5581312540 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5581312540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6059612160).

5581312540 is an abundant number, since it is smaller than the sum of its proper divisors (6537911780).

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

5581312540 is a wasteful number, since it uses less digits than its factorization.

5581312540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15202 (or 15200 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 34.

The square root of 5581312540 is about 74708.1825505078. The cubic root of 5581312540 is about 1773.8304842415.

The spelling of 5581312540 in words is "five billion, five hundred eighty-one million, three hundred twelve thousand, five hundred forty".