530645 has 4 divisors (see below), whose sum is σ = 636780. Its totient is φ = 424512.

The previous prime is 530641. The next prime is 530653. The reversal of 530645 is 546035.

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 223729 + 306916 = 473^2 + 554^2 .

It is a cyclic number.

It is not a de Polignac number, because 530645 - 2² = 530641 is a prime.

It is a nialpdrome in base 14.

It is a self number, because there is not a number n which added to its sum of digits gives 530645.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (530641) 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, 53060 + ... + 53069.

It is an arithmetic number, because the mean of its divisors is an integer number (159195).

2⁵³⁰⁶⁴⁵ is an apocalyptic number.

It is an amenable number.

530645 is a deficient number, since it is larger than the sum of its proper divisors (106135).

530645 is a wasteful number, since it uses less digits than its factorization.

530645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106134.

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 530645 is about 728.4538420518. The cubic root of 530645 is about 80.9595388025.

The spelling of 530645 in words is "five hundred thirty thousand, six hundred forty-five".