5221231 has 2 divisors, whose sum is σ = 5221232. Its totient is φ = 5221230.

The previous prime is 5221217. The next prime is 5221283. The reversal of 5221231 is 1321225.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5221231 - 2⁵ = 5221199 is a prime.

It is a super-2 number, since 2×5221231² = 54522506310722, which contains 22 as substring.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5221211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2610615 + 2610616.

It is an arithmetic number, because the mean of its divisors is an integer number (2610616).

Almost surely, 2^5221231 is an apocalyptic number.

5221231 is a deficient number, since it is larger than the sum of its proper divisors (1).

5221231 is an equidigital number, since it uses as much as digits as its factorization.

5221231 is an evil number, because the sum of its binary digits is even.

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

The square root of 5221231 is about 2285.0013129099. The cubic root of 5221231 is about 173.4832845227.

Adding to 5221231 its reverse (1321225), we get a palindrome (6542456).

The spelling of 5221231 in words is "five million, two hundred twenty-one thousand, two hundred thirty-one".