53330321 has 16 divisors (see below), whose sum is σ = 61828800. Its totient is φ = 45489600.

The previous prime is 53330317. The next prime is 53330419. The reversal of 53330321 is 12303335.

It is a cyclic number.

It is not a de Polignac number, because 53330321 - 2² = 53330317 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 53330293 and 53330302.

It is not an unprimeable number, because it can be changed into a prime (53330821) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21611 + ... + 23951.

It is an arithmetic number, because the mean of its divisors is an integer number (3864300).

Almost surely, 2^53330321 is an apocalyptic number.

It is an amenable number.

53330321 is a deficient number, since it is larger than the sum of its proper divisors (8498479).

53330321 is a wasteful number, since it uses less digits than its factorization.

53330321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2480.

The product of its (nonzero) digits is 810, while the sum is 20.

The square root of 53330321 is about 7302.7611901253. The cubic root of 53330321 is about 376.4073246335.

Adding to 53330321 its reverse (12303335), we get a palindrome (65633656).

The spelling of 53330321 in words is "fifty-three million, three hundred thirty thousand, three hundred twenty-one".