5510566721 has 8 divisors (see below), whose sum is σ = 6124953024. Its totient is φ = 4915084720.

The previous prime is 5510566717. The next prime is 5510566729. The reversal of 5510566721 is 1276650155.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 5510566721 - 2² = 5510566717 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5510566729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4725461 + ... + 4726626.

It is an arithmetic number, because the mean of its divisors is an integer number (765619128).

Almost surely, 2^5510566721 is an apocalyptic number.

It is an amenable number.

5510566721 is a deficient number, since it is larger than the sum of its proper divisors (614386303).

5510566721 is a wasteful number, since it uses less digits than its factorization.

5510566721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9452151.

The product of its (nonzero) digits is 63000, while the sum is 38.

The square root of 5510566721 is about 74233.1915048787. The cubic root of 5510566721 is about 1766.3038749803.

The spelling of 5510566721 in words is "five billion, five hundred ten million, five hundred sixty-six thousand, seven hundred twenty-one".