530729 has 4 divisors (see below), whose sum is σ = 549060. Its totient is φ = 512400.

The previous prime is 530713. The next prime is 530731. The reversal of 530729 is 927035.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 105625 + 425104 = 325^2 + 652^2 .

It is a cyclic number.

It is not a de Polignac number, because 530729 - 2⁴ = 530713 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 530698 and 530707.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 530729.

It is not an unprimeable number, because it can be changed into a prime (530129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9122 + ... + 9179.

It is an arithmetic number, because the mean of its divisors is an integer number (137265).

2⁵³⁰⁷²⁹ is an apocalyptic number.

It is an amenable number.

530729 is a deficient number, since it is larger than the sum of its proper divisors (18331).

530729 is a wasteful number, since it uses less digits than its factorization.

530729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18330.

The product of its (nonzero) digits is 1890, while the sum is 26.

The square root of 530729 is about 728.5114961344. The cubic root of 530729 is about 80.9638104859.

The spelling of 530729 in words is "five hundred thirty thousand, seven hundred twenty-nine".