524424321 has 8 divisors (see below), whose sum is σ = 776924960. Its totient is φ = 349616196.

The previous prime is 524424319. The next prime is 524424323. The reversal of 524424321 is 123424425.

It is an interprime number because it is at equal distance from previous prime (524424319) and next prime (524424323).

It is not a de Polignac number, because 524424321 - 2¹ = 524424319 is a prime.

It is a super-2 number, since 2×524424321² = 550041736912622082, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 19423123 = 524424321 / (5 + 2 + 4 + 4 + 2 + 4 + 3 + 2 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (524424323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9711535 + ... + 9711588.

It is an arithmetic number, because the mean of its divisors is an integer number (97115620).

Almost surely, 2^524424321 is an apocalyptic number.

It is an amenable number.

524424321 is a deficient number, since it is larger than the sum of its proper divisors (252500639).

524424321 is a wasteful number, since it uses less digits than its factorization.

524424321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19423132 (or 19423126 counting only the distinct ones).

The product of its digits is 7680, while the sum is 27.

The square root of 524424321 is about 22900.3126834548. The cubic root of 524424321 is about 806.4193526349.

Adding to 524424321 its reverse (123424425), we get a palindrome (647848746).

The spelling of 524424321 in words is "five hundred twenty-four million, four hundred twenty-four thousand, three hundred twenty-one".