52430321 has 4 divisors (see below), whose sum is σ = 52920432. Its totient is φ = 51940212.

The previous prime is 52430297. The next prime is 52430327. The reversal of 52430321 is 12303425.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 52430321 - 2¹⁰ = 52429297 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 52430293 and 52430302.

It is not an unprimeable number, because it can be changed into a prime (52430327) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 244895 + ... + 245108.

It is an arithmetic number, because the mean of its divisors is an integer number (13230108).

Almost surely, 2^52430321 is an apocalyptic number.

It is an amenable number.

52430321 is a deficient number, since it is larger than the sum of its proper divisors (490111).

52430321 is a wasteful number, since it uses less digits than its factorization.

52430321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 490110.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 52430321 is about 7240.8784688047. The cubic root of 52430321 is about 374.2778897848.

Adding to 52430321 its reverse (12303425), we get a palindrome (64733746).

The spelling of 52430321 in words is "fifty-two million, four hundred thirty thousand, three hundred twenty-one".