5581551855 has 32 divisors (see below), whose sum is σ = 9757681920. Its totient is φ = 2701946880.

The previous prime is 5581551839. The next prime is 5581551863.

It is a happy number.

5581551855 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 5581551855 - 2⁴ = 5581551839 is a prime.

It is a super-2 number, since 2×5581551855² = 62307442220107882050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 79791 + ... + 132399.

It is an arithmetic number, because the mean of its divisors is an integer number (304927560).

Almost surely, 2^5581551855 is an apocalyptic number.

5581551855 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

5581551855 is a deficient number, since it is larger than the sum of its proper divisors (4176130065).

5581551855 is a wasteful number, since it uses less digits than its factorization.

5581551855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53271.

The product of its digits is 1000000, while the sum is 48.

The square root of 5581551855 is about 74709.7841985907. The cubic root of 5581551855 is about 1773.8558365920.

The spelling of 5581551855 in words is "five billion, five hundred eighty-one million, five hundred fifty-one thousand, eight hundred fifty-five".