524445421 has 2 divisors, whose sum is σ = 524445422. Its totient is φ = 524445420.

The previous prime is 524445403. The next prime is 524445443. The reversal of 524445421 is 124544425.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 341140900 + 183304521 = 18470^2 + 13539^2 .

It is a cyclic number.

It is not a de Polignac number, because 524445421 - 2⁷ = 524445293 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (524445451) 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, 262222710 + 262222711.

It is an arithmetic number, because the mean of its divisors is an integer number (262222711).

Almost surely, 2^524445421 is an apocalyptic number.

It is an amenable number.

524445421 is a deficient number, since it is larger than the sum of its proper divisors (1).

524445421 is an equidigital number, since it uses as much as digits as its factorization.

524445421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25600, while the sum is 31.

The square root of 524445421 is about 22900.7733712205. The cubic root of 524445421 is about 806.4301678084.

Adding to 524445421 its reverse (124544425), we get a palindrome (648989846).

The spelling of 524445421 in words is "five hundred twenty-four million, four hundred forty-five thousand, four hundred twenty-one".