538505 has 8 divisors (see below), whose sum is σ = 705024. Its totient is φ = 391600.

The previous prime is 538487. The next prime is 538511. The reversal of 538505 is 505835.

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

It is not a de Polignac number, because 538505 - 2⁸ = 538249 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 15.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4841 + ... + 4950.

It is an arithmetic number, because the mean of its divisors is an integer number (88128).

2⁵³⁸⁵⁰⁵ is an apocalyptic number.

538505 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

538505 is a deficient number, since it is larger than the sum of its proper divisors (166519).

538505 is a wasteful number, since it uses less digits than its factorization.

538505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9807.

The product of its (nonzero) digits is 3000, while the sum is 26.

The square root of 538505 is about 733.8289991544. The cubic root of 538505 is about 81.3573098860.

It can be divided in two parts, 53 and 8505, that added together give a palindrome (8558).

The spelling of 538505 in words is "five hundred thirty-eight thousand, five hundred five".