5551443656 has 32 divisors (see below), whose sum is σ = 11524718880. Its totient is φ = 2485718400.

The previous prime is 5551443631. The next prime is 5551443679. The reversal of 5551443656 is 6563441555.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 464885 + ... + 476676.

It is an arithmetic number, because the mean of its divisors is an integer number (360147465).

Almost surely, 2^5551443656 is an apocalyptic number.

It is an amenable number.

5551443656 is an abundant number, since it is smaller than the sum of its proper divisors (5973275224).

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

5551443656 is a wasteful number, since it uses less digits than its factorization.

5551443656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 941645 (or 941641 counting only the distinct ones).

The product of its digits is 1080000, while the sum is 44.

The square root of 5551443656 is about 74508.0106834158. The cubic root of 5551443656 is about 1770.6605529274.

The spelling of 5551443656 in words is "five billion, five hundred fifty-one million, four hundred forty-three thousand, six hundred fifty-six".