524221 has 2 divisors, whose sum is σ = 524222. Its totient is φ = 524220.

The previous prime is 524219. The next prime is 524231. The reversal of 524221 is 122425.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 511225 + 12996 = 715^2 + 114^2 .

It is a cyclic number.

It is not a de Polignac number, because 524221 - 2¹ = 524219 is a prime.

Together with 524219, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 524195 and 524204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (524201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 262110 + 262111.

It is an arithmetic number, because the mean of its divisors is an integer number (262111).

2⁵²⁴²²¹ is an apocalyptic number.

It is an amenable number.

524221 is a deficient number, since it is larger than the sum of its proper divisors (1).

524221 is an equidigital number, since it uses as much as digits as its factorization.

524221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 160, while the sum is 16.

The square root of 524221 is about 724.0310766811. The cubic root of 524221 is about 80.6315122036.

Adding to 524221 its reverse (122425), we get a palindrome (646646).

The spelling of 524221 in words is "five hundred twenty-four thousand, two hundred twenty-one".