5566221881 has 8 divisors (see below), whose sum is σ = 6336252864. Its totient is φ = 4840192720.

The previous prime is 5566221877. The next prime is 5566221887. The reversal of 5566221881 is 1881226655.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 5566221881 - 2² = 5566221877 is a prime.

It is a super-2 number, since 2×5566221881² = 61965652057046356322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5566221887) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11000186 + ... + 11000691.

It is an arithmetic number, because the mean of its divisors is an integer number (792031608).

Almost surely, 2^5566221881 is an apocalyptic number.

It is an amenable number.

5566221881 is a deficient number, since it is larger than the sum of its proper divisors (770030983).

5566221881 is a wasteful number, since it uses less digits than its factorization.

5566221881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22000911.

The product of its digits is 230400, while the sum is 44.

The square root of 5566221881 is about 74607.1168254075. The cubic root of 5566221881 is about 1772.2303568954.

The spelling of 5566221881 in words is "five billion, five hundred sixty-six million, two hundred twenty-one thousand, eight hundred eighty-one".