5018221 has 4 divisors (see below), whose sum is σ = 5404252. Its totient is φ = 4632192.

The previous prime is 5018219. The next prime is 5018269. The reversal of 5018221 is 1228105.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1228105 = 5 ⋅245621.

It can be written as a sum of positive squares in 2 ways, for example, as 2842596 + 2175625 = 1686^2 + 1475^2 .

It is a cyclic number.

It is not a de Polignac number, because 5018221 - 2¹ = 5018219 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5018201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 192996 + ... + 193021.

It is an arithmetic number, because the mean of its divisors is an integer number (1351063).

Almost surely, 2^5018221 is an apocalyptic number.

It is an amenable number.

5018221 is a deficient number, since it is larger than the sum of its proper divisors (386031).

5018221 is a wasteful number, since it uses less digits than its factorization.

5018221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 386030.

The product of its (nonzero) digits is 160, while the sum is 19.

The square root of 5018221 is about 2240.1386117828. The cubic root of 5018221 is about 171.2050593353.

The spelling of 5018221 in words is "five million, eighteen thousand, two hundred twenty-one".