538520 has 16 divisors (see below), whose sum is σ = 1211760. Its totient is φ = 215392.

The previous prime is 538519. The next prime is 538523. The reversal of 538520 is 25835.

It is a nialpdrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (538523) 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, 6692 + ... + 6771.

It is an arithmetic number, because the mean of its divisors is an integer number (75735).

2⁵³⁸⁵²⁰ is an apocalyptic number.

It is an amenable number.

538520 is an abundant number, since it is smaller than the sum of its proper divisors (673240).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

538520 is a wasteful number, since it uses less digits than its factorization.

538520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13474 (or 13470 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 538520 is about 733.8392194480. The cubic root of 538520 is about 81.3580652787.

The spelling of 538520 in words is "five hundred thirty-eight thousand, five hundred twenty".