5581457280 has 448 divisors, whose sum is σ = 22876927200. Its totient is φ = 1275015168.

The previous prime is 5581457269. The next prime is 5581457303. The reversal of 5581457280 is 827541855.

5581457280 is a `hidden beast` number, since 5 + 581 + 45 + 7 + 28 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (448).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 3265066 + ... + 3266774.

Almost surely, 2^5581457280 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 5581457280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11438463600).

5581457280 is an abundant number, since it is smaller than the sum of its proper divisors (17295469920).

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

5581457280 is an equidigital number, since it uses as much as digits as its factorization.

5581457280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1753 (or 1726 counting only the distinct ones).

The product of its (nonzero) digits is 448000, while the sum is 45.

The square root of 5581457280 is about 74709.1512466846. The cubic root of 5581457280 is about 1773.8458176720.

The spelling of 5581457280 in words is "five billion, five hundred eighty-one million, four hundred fifty-seven thousand, two hundred eighty".