5551445543 has 6 divisors (see below), whose sum is σ = 6457804056. Its totient is φ = 4758381852.

The previous prime is 5551445539. The next prime is 5551445573. The reversal of 5551445543 is 3455441555.

It is not a de Polignac number, because 5551445543 - 2² = 5551445539 is a prime.

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 5551445543.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5551445533) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 56647355 + ... + 56647452.

It is an arithmetic number, because the mean of its divisors is an integer number (1076300676).

Almost surely, 2^5551445543 is an apocalyptic number.

5551445543 is a deficient number, since it is larger than the sum of its proper divisors (906358513).

5551445543 is a wasteful number, since it uses less digits than its factorization.

5551445543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113294821 (or 113294814 counting only the distinct ones).

The product of its digits is 600000, while the sum is 41.

The square root of 5551445543 is about 74508.0233464826. The cubic root of 5551445543 is about 1770.6607535500.

The spelling of 5551445543 in words is "five billion, five hundred fifty-one million, four hundred forty-five thousand, five hundred forty-three".