53013503 has 8 divisors (see below), whose sum is σ = 55418880. Its totient is φ = 50651640.

The previous prime is 53013487. The next prime is 53013523. The reversal of 53013503 is 30531035.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 53013503 - 2⁴ = 53013487 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 (53013523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8375 + ... + 13272.

It is an arithmetic number, because the mean of its divisors is an integer number (6927360).

Almost surely, 2^53013503 is an apocalyptic number.

53013503 is a deficient number, since it is larger than the sum of its proper divisors (2405377).

53013503 is a wasteful number, since it uses less digits than its factorization.

53013503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21757.

The product of its (nonzero) digits is 675, while the sum is 20.

The square root of 53013503 is about 7281.0372200669. The cubic root of 53013503 is about 375.6604727930.

Adding to 53013503 its reverse (30531035), we get a palindrome (83544538).

The spelling of 53013503 in words is "fifty-three million, thirteen thousand, five hundred three".