524242321 has 2 divisors, whose sum is σ = 524242322. Its totient is φ = 524242320.

The previous prime is 524242297. The next prime is 524242343. The reversal of 524242321 is 123242425.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 371101696 + 153140625 = 19264^2 + 12375^2 .

It is a cyclic number.

It is not a de Polignac number, because 524242321 - 2¹³ = 524234129 is a prime.

It is a super-2 number, since 2×524242321² = 549660022254934082, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (524242361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 262121160 + 262121161.

It is an arithmetic number, because the mean of its divisors is an integer number (262121161).

Almost surely, 2^524242321 is an apocalyptic number.

It is an amenable number.

524242321 is a deficient number, since it is larger than the sum of its proper divisors (1).

524242321 is an equidigital number, since it uses as much as digits as its factorization.

524242321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3840, while the sum is 25.

The square root of 524242321 is about 22896.3385937577. The cubic root of 524242321 is about 806.3260533108.

Adding to 524242321 its reverse (123242425), we get a palindrome (647484746).

It can be divided in two parts, 52424 and 2321, that added together give a palindrome (54745).

The spelling of 524242321 in words is "five hundred twenty-four million, two hundred forty-two thousand, three hundred twenty-one".