525503 has 12 divisors (see below), whose sum is σ = 596904. Its totient is φ = 462000.

The previous prime is 525493. The next prime is 525517. The reversal of 525503 is 305525.

It is not a de Polignac number, because 525503 - 2⁶ = 525439 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (525533) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5153 + ... + 5253.

It is an arithmetic number, because the mean of its divisors is an integer number (49742).

2⁵²⁵⁵⁰³ is an apocalyptic number.

525503 is a deficient number, since it is larger than the sum of its proper divisors (71401).

525503 is a wasteful number, since it uses less digits than its factorization.

525503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166 (or 155 counting only the distinct ones).

The product of its (nonzero) digits is 750, while the sum is 20.

The square root of 525503 is about 724.9158571862. The cubic root of 525503 is about 80.6971877160.

It can be divided in two parts, 52 and 5503, that added together give a palindrome (5555).

The spelling of 525503 in words is "five hundred twenty-five thousand, five hundred three".