5221566165 has 8 divisors (see below), whose sum is σ = 8354505888. Its totient is φ = 2784835280.

The previous prime is 5221566157. The next prime is 5221566169. The reversal of 5221566165 is 5616651225.

It is a happy number.

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

It is not a de Polignac number, because 5221566165 - 2³ = 5221566157 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5221566169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 174052191 + ... + 174052220.

It is an arithmetic number, because the mean of its divisors is an integer number (1044313236).

Almost surely, 2^5221566165 is an apocalyptic number.

It is an amenable number.

5221566165 is a deficient number, since it is larger than the sum of its proper divisors (3132939723).

5221566165 is a wasteful number, since it uses less digits than its factorization.

5221566165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 348104419.

The product of its digits is 108000, while the sum is 39.

The square root of 5221566165 is about 72260.4052368930. The cubic root of 5221566165 is about 1734.8699656439.

The spelling of 5221566165 in words is "five billion, two hundred twenty-one million, five hundred sixty-six thousand, one hundred sixty-five".