530805 has 16 divisors (see below), whose sum is σ = 926784. Its totient is φ = 257280.

The previous prime is 530797. The next prime is 530807. The reversal of 530805 is 508035.

It is not a de Polignac number, because 530805 - 2³ = 530797 is a prime.

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 (530807) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1444 + ... + 1773.

It is an arithmetic number, because the mean of its divisors is an integer number (57924).

2⁵³⁰⁸⁰⁵ is an apocalyptic number.

530805 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

530805 is a deficient number, since it is larger than the sum of its proper divisors (395979).

530805 is a wasteful number, since it uses less digits than its factorization.

530805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3236.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 530805 is about 728.5636554207. The cubic root of 530805 is about 80.9676749541.

The spelling of 530805 in words is "five hundred thirty thousand, eight hundred five".