538530503 has 4 divisors (see below), whose sum is σ = 615463440. Its totient is φ = 461597568.

The previous prime is 538530479. The next prime is 538530511. The reversal of 538530503 is 305035835.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 538530503 - 2¹⁰ = 538529479 is a prime.

It is a super-2 number, since 2×538530503² = 580030205322866018, 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 538530503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (538536503) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38466458 + ... + 38466471.

It is an arithmetic number, because the mean of its divisors is an integer number (153865860).

Almost surely, 2^538530503 is an apocalyptic number.

538530503 is a deficient number, since it is larger than the sum of its proper divisors (76932937).

538530503 is an equidigital number, since it uses as much as digits as its factorization.

538530503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76932936.

The product of its (nonzero) digits is 27000, while the sum is 32.

The square root of 538530503 is about 23206.2599959580. The cubic root of 538530503 is about 813.5859419639.

The spelling of 538530503 in words is "five hundred thirty-eight million, five hundred thirty thousand, five hundred three".