530381 has 4 divisors (see below), whose sum is σ = 548700. Its totient is φ = 512064.

The previous prime is 530359. The next prime is 530389. The reversal of 530381 is 183035.

530381 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 183035 = 5 ⋅36607.

It can be written as a sum of positive squares in 2 ways, for example, as 434281 + 96100 = 659^2 + 310^2 .

It is a cyclic number.

It is not a de Polignac number, because 530381 - 2¹⁰ = 529357 is a prime.

It is a super-2 number, since 2×530381² = 562608010322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (530389) 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, 9116 + ... + 9173.

It is an arithmetic number, because the mean of its divisors is an integer number (137175).

2⁵³⁰³⁸¹ is an apocalyptic number.

It is an amenable number.

530381 is a deficient number, since it is larger than the sum of its proper divisors (18319).

530381 is a wasteful number, since it uses less digits than its factorization.

530381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18318.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 530381 is about 728.2726137924. The cubic root of 530381 is about 80.9461105760.

It can be divided in two parts, 530 and 381, that multiplied together give a triangular number (201930 = T₆₃₅).

The spelling of 530381 in words is "five hundred thirty thousand, three hundred eighty-one".