530945 has 4 divisors (see below), whose sum is σ = 637140. Its totient is φ = 424752.

The previous prime is 530911. The next prime is 530947. The reversal of 530945 is 549035.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 549035 = 5 ⋅109807.

It can be written as a sum of positive squares in 2 ways, for example, as 169744 + 361201 = 412^2 + 601^2 .

It is a cyclic number.

It is not a de Polignac number, because 530945 - 2¹⁴ = 514561 is a prime.

It is a plaindrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (530947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53090 + ... + 53099.

It is an arithmetic number, because the mean of its divisors is an integer number (159285).

2⁵³⁰⁹⁴⁵ is an apocalyptic number.

It is an amenable number.

530945 is a deficient number, since it is larger than the sum of its proper divisors (106195).

530945 is a wasteful number, since it uses less digits than its factorization.

530945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106194.

The product of its (nonzero) digits is 2700, while the sum is 26.

The square root of 530945 is about 728.6597285428. The cubic root of 530945 is about 80.9747927456.

The spelling of 530945 in words is "five hundred thirty thousand, nine hundred forty-five".