530000 has 50 divisors (see below), whose sum is σ = 1307394. Its totient is φ = 208000.

The previous prime is 529999. The next prime is 530017. The reversal of 530000 is 35.

It can be written as a sum of positive squares in 5 ways, for example, as 150544 + 379456 = 388^2 + 616^2 .

It is a tau number, because it is divible by the number of its divisors (50).

It is a Harshad number since it is a multiple of its sum of digits (8).

It is a nialpdrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 530000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 9974 + ... + 10026.

2⁵³⁰⁰⁰⁰ is an apocalyptic number.

530000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 530000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (653697).

530000 is an abundant number, since it is smaller than the sum of its proper divisors (777394).

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

530000 is an equidigital number, since it uses as much as digits as its factorization.

530000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81 (or 60 counting only the distinct ones).

The product of its (nonzero) digits is 15, while the sum is 8.

The square root of 530000 is about 728.0109889281. The cubic root of 530000 is about 80.9267233457.

Adding to 530000 its reverse (35), we get a palindrome (530035).

The spelling of 530000 in words is "five hundred thirty thousand".