5581112447 has 4 divisors (see below), whose sum is σ = 5651759520. Its totient is φ = 5510465376.

The previous prime is 5581112443. The next prime is 5581112473. The reversal of 5581112447 is 7442111855.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7442111855 = 5 ⋅1488422371.

It is a cyclic number.

It is not a de Polignac number, because 5581112447 - 2² = 5581112443 is a prime.

It is a super-2 number, since 2×5581112447² = 62297632292116655618, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 5581112447.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5581112443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35323418 + ... + 35323575.

It is an arithmetic number, because the mean of its divisors is an integer number (1412939880).

Almost surely, 2^5581112447 is an apocalyptic number.

5581112447 is a deficient number, since it is larger than the sum of its proper divisors (70647073).

5581112447 is an equidigital number, since it uses as much as digits as its factorization.

5581112447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70647072.

The product of its digits is 44800, while the sum is 38.

The square root of 5581112447 is about 74706.8433746200. The cubic root of 5581112447 is about 1773.8092864018.

The spelling of 5581112447 in words is "five billion, five hundred eighty-one million, one hundred twelve thousand, four hundred forty-seven".