53242321 has 4 divisors (see below), whose sum is σ = 58082544. Its totient is φ = 48402100.

The previous prime is 53242303. The next prime is 53242327. The reversal of 53242321 is 12324235.

53242321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 53242321 - 2⁷ = 53242193 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 53242292 and 53242301.

It is not an unprimeable number, because it can be changed into a prime (53242327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2420095 + ... + 2420116.

It is an arithmetic number, because the mean of its divisors is an integer number (14520636).

Almost surely, 2^53242321 is an apocalyptic number.

It is an amenable number.

53242321 is a deficient number, since it is larger than the sum of its proper divisors (4840223).

53242321 is a wasteful number, since it uses less digits than its factorization.

53242321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4840222.

The product of its digits is 1440, while the sum is 22.

The square root of 53242321 is about 7296.7335842828. The cubic root of 53242321 is about 376.2001749307.

Adding to 53242321 its reverse (12324235), we get a palindrome (65566556).

The spelling of 53242321 in words is "fifty-three million, two hundred forty-two thousand, three hundred twenty-one".