53023503 has 16 divisors (see below), whose sum is σ = 76267520. Its totient is φ = 32573664.

The previous prime is 53023483. The next prime is 53023541. The reversal of 53023503 is 30532035.

It is not a de Polignac number, because 53023503 - 2¹⁶ = 52957967 is a prime.

It is a super-2 number, since 2×53023503² = 5622983740782018, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 53023503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53023573) 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, 40818 + ... + 42096.

It is an arithmetic number, because the mean of its divisors is an integer number (4766720).

Almost surely, 2^53023503 is an apocalyptic number.

53023503 is a deficient number, since it is larger than the sum of its proper divisors (23244017).

53023503 is a wasteful number, since it uses less digits than its factorization.

53023503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2358.

The product of its (nonzero) digits is 1350, while the sum is 21.

The square root of 53023503 is about 7281.7239030329. The cubic root of 53023503 is about 375.6840917349.

Adding to 53023503 its reverse (30532035), we get a palindrome (83555538).

The spelling of 53023503 in words is "fifty-three million, twenty-three thousand, five hundred three".