5181223 has 2 divisors, whose sum is σ = 5181224. Its totient is φ = 5181222.

The previous prime is 5181217. The next prime is 5181251. The reversal of 5181223 is 3221815.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5181223 - 2⁵ = 5181191 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 5181194 and 5181203.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5181283) 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, 2590611 + 2590612.

It is an arithmetic number, because the mean of its divisors is an integer number (2590612).

Almost surely, 2^5181223 is an apocalyptic number.

5181223 is a deficient number, since it is larger than the sum of its proper divisors (1).

5181223 is an equidigital number, since it uses as much as digits as its factorization.

5181223 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 480, while the sum is 22.

The square root of 5181223 is about 2276.2299971664. The cubic root of 5181223 is about 173.0390391588.

The spelling of 5181223 in words is "five million, one hundred eighty-one thousand, two hundred twenty-three".