53020503 has 12 divisors (see below), whose sum is σ = 78453648. Its totient is φ = 34484640.

The previous prime is 53020493. The next prime is 53020523. The reversal of 53020503 is 30502035.

53020503 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-53020503 is a prime.

It is a super-2 number, since 2×53020503² = 5622347476746018, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53020523) 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 11 ways as a sum of consecutive naturals, for example, 71475 + ... + 72212.

It is an arithmetic number, because the mean of its divisors is an integer number (6537804).

Almost surely, 2^53020503 is an apocalyptic number.

53020503 is a deficient number, since it is larger than the sum of its proper divisors (25433145).

53020503 is a wasteful number, since it uses less digits than its factorization.

53020503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143734 (or 143731 counting only the distinct ones).

The product of its (nonzero) digits is 450, while the sum is 18.

The square root of 53020503 is about 7281.5179049426. The cubic root of 53020503 is about 375.6770063642.

Adding to 53020503 its reverse (30502035), we get a palindrome (83522538).

The spelling of 53020503 in words is "fifty-three million, twenty thousand, five hundred three".