5561055999 has 16 divisors (see below), whose sum is σ = 8265104640. Its totient is φ = 3695444280.

The previous prime is 5561055991. The next prime is 5561056001. The reversal of 5561055999 is 9995501655.

It is not a de Polignac number, because 5561055999 - 2³ = 5561055991 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5561055991) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 322737 + ... + 339530.

It is an arithmetic number, because the mean of its divisors is an integer number (516569040).

Almost surely, 2^5561055999 is an apocalyptic number.

5561055999 is a deficient number, since it is larger than the sum of its proper divisors (2704048641).

5561055999 is a wasteful number, since it uses less digits than its factorization.

5561055999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 662587 (or 662581 counting only the distinct ones).

The product of its (nonzero) digits is 2733750, while the sum is 54.

The square root of 5561055999 is about 74572.4882178408. The cubic root of 5561055999 is about 1771.6819318428.

The spelling of 5561055999 in words is "five billion, five hundred sixty-one million, fifty-five thousand, nine hundred ninety-nine".