525442321 has 8 divisors (see below), whose sum is σ = 554698080. Its totient is φ = 496346688.

The previous prime is 525442303. The next prime is 525442361. The reversal of 525442321 is 123244525.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 525442321 - 2¹¹ = 525440273 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 525442321.

It is not an unprimeable number, because it can be changed into a prime (525442301) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33256 + ... + 46441.

It is an arithmetic number, because the mean of its divisors is an integer number (69337260).

Almost surely, 2^525442321 is an apocalyptic number.

It is an amenable number.

525442321 is a deficient number, since it is larger than the sum of its proper divisors (29255759).

525442321 is a wasteful number, since it uses less digits than its factorization.

525442321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80063.

The product of its digits is 9600, while the sum is 28.

The square root of 525442321 is about 22922.5286781367. The cubic root of 525442321 is about 806.9408160422.

Adding to 525442321 its reverse (123244525), we get a palindrome (648686846).

The spelling of 525442321 in words is "five hundred twenty-five million, four hundred forty-two thousand, three hundred twenty-one".