53003303 has 4 divisors (see below), whose sum is σ = 53153808. Its totient is φ = 52852800.

The previous prime is 53003287. The next prime is 53003333. The reversal of 53003303 is 30330035.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30330035 = 5 ⋅6066007.

It is a cyclic number.

It is not a de Polignac number, because 53003303 - 2⁴ = 53003287 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53003333) 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 3 ways as a sum of consecutive naturals, for example, 74723 + ... + 75428.

It is an arithmetic number, because the mean of its divisors is an integer number (13288452).

Almost surely, 2^53003303 is an apocalyptic number.

53003303 is a deficient number, since it is larger than the sum of its proper divisors (150505).

53003303 is a wasteful number, since it uses less digits than its factorization.

53003303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150504.

The product of its (nonzero) digits is 405, while the sum is 17.

The square root of 53003303 is about 7280.3367367176. The cubic root of 53003303 is about 375.6363784121.

Adding to 53003303 its reverse (30330035), we get a palindrome (83333338).

The spelling of 53003303 in words is "fifty-three million, three thousand, three hundred three".