5223121 has 2 divisors, whose sum is σ = 5223122. Its totient is φ = 5223120.

The previous prime is 5223109. The next prime is 5223181. The reversal of 5223121 is 1213225.

5223121 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4682896 + 540225 = 2164^2 + 735^2 .

It is a cyclic number.

It is not a de Polignac number, because 5223121 - 2⁷ = 5222993 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 5223095 and 5223104.

It is not a weakly prime, because it can be changed into another prime (5223181) 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 as a sum of consecutive naturals, namely, 2611560 + 2611561.

It is an arithmetic number, because the mean of its divisors is an integer number (2611561).

Almost surely, 2^5223121 is an apocalyptic number.

It is an amenable number.

5223121 is a deficient number, since it is larger than the sum of its proper divisors (1).

5223121 is an equidigital number, since it uses as much as digits as its factorization.

5223121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 120, while the sum is 16.

The square root of 5223121 is about 2285.4148419926. The cubic root of 5223121 is about 173.5042146988.

Adding to 5223121 its reverse (1213225), we get a palindrome (6436346).

The spelling of 5223121 in words is "five million, two hundred twenty-three thousand, one hundred twenty-one".