5516665571 has 4 divisors (see below), whose sum is σ = 5516837952. Its totient is φ = 5516493192.

The previous prime is 5516665547. The next prime is 5516665573. The reversal of 5516665571 is 1755666155.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1755666155 = 5 ⋅351133231.

It is a cyclic number.

It is not a de Polignac number, because 5516665571 - 2⁶ = 5516665507 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5516665573) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22496 + ... + 107421.

It is an arithmetic number, because the mean of its divisors is an integer number (1379209488).

Almost surely, 2^5516665571 is an apocalyptic number.

5516665571 is a deficient number, since it is larger than the sum of its proper divisors (172381).

5516665571 is a wasteful number, since it uses less digits than its factorization.

5516665571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172380.

The product of its digits is 945000, while the sum is 47.

The square root of 5516665571 is about 74274.2591413741. The cubic root of 5516665571 is about 1766.9552569058.

The spelling of 5516665571 in words is "five billion, five hundred sixteen million, six hundred sixty-five thousand, five hundred seventy-one".