5591664555 has 16 divisors (see below), whose sum is σ = 8950759200. Its totient is φ = 2980855808.

The previous prime is 5591664523. The next prime is 5591664563. The reversal of 5591664555 is 5554661955.

It is a cyclic number.

It is not a de Polignac number, because 5591664555 - 2⁵ = 5591664523 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 5591664498 and 5591664507.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51030 + ... + 117419.

It is an arithmetic number, because the mean of its divisors is an integer number (559422450).

Almost surely, 2^5591664555 is an apocalyptic number.

5591664555 is a deficient number, since it is larger than the sum of its proper divisors (3359094645).

5591664555 is a wasteful number, since it uses less digits than its factorization.

5591664555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170670.

The product of its digits is 4050000, while the sum is 51.

The square root of 5591664555 is about 74777.4334609045. The cubic root of 5591664555 is about 1774.9264856150.

The spelling of 5591664555 in words is "five billion, five hundred ninety-one million, six hundred sixty-four thousand, five hundred fifty-five".