5220550217 has 4 divisors (see below), whose sum is σ = 5400569220. Its totient is φ = 5040531216.

The previous prime is 5220550211. The next prime is 5220550229. The reversal of 5220550217 is 7120550225.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1765344256 + 3455205961 = 42016^2 + 58781^2 .

It is a cyclic number.

It is not a de Polignac number, because 5220550217 - 2³² = 925582921 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29), and also a Moran number because the ratio is a prime number: 180018973 = 5220550217 / (5 + 2 + 2 + 0 + 5 + 5 + 0 + 2 + 1 + 7).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 5220550217.

It is not an unprimeable number, because it can be changed into a prime (5220550211) 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, 90009458 + ... + 90009515.

It is an arithmetic number, because the mean of its divisors is an integer number (1350142305).

Almost surely, 2^5220550217 is an apocalyptic number.

It is an amenable number.

5220550217 is a deficient number, since it is larger than the sum of its proper divisors (180019003).

5220550217 is a wasteful number, since it uses less digits than its factorization.

5220550217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180019002.

The product of its (nonzero) digits is 7000, while the sum is 29.

The square root of 5220550217 is about 72253.3751253185. The cubic root of 5220550217 is about 1734.7574418059.

The spelling of 5220550217 in words is "five billion, two hundred twenty million, five hundred fifty thousand, two hundred seventeen".