53003321 has 8 divisors (see below), whose sum is σ = 61131840. Its totient is φ = 45013968.

The previous prime is 53003287. The next prime is 53003333. The reversal of 53003321 is 12330035.

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 53003321 - 2¹⁰ = 53002297 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 53003321.

It is not an unprimeable number, because it can be changed into a prime (53002321) 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, 33971 + ... + 35496.

It is an arithmetic number, because the mean of its divisors is an integer number (7641480).

Almost surely, 2^53003321 is an apocalyptic number.

It is an amenable number.

53003321 is a deficient number, since it is larger than the sum of its proper divisors (8128519).

53003321 is a wasteful number, since it uses less digits than its factorization.

53003321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69583.

The product of its (nonzero) digits is 270, while the sum is 17.

The square root of 53003321 is about 7280.3379729241. The cubic root of 53003321 is about 375.6364209343.

Adding to 53003321 its reverse (12330035), we get a palindrome (65333356).

The spelling of 53003321 in words is "fifty-three million, three thousand, three hundred twenty-one".