43530 has 16 divisors (see below), whose sum is σ = 104544. Its totient is φ = 11600.

The previous prime is 43517. The next prime is 43541. The reversal of 43530 is 3534.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a nialpdrome in base 6.

It is a zygodrome in base 4.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 43530.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 696 + ... + 755.

It is an arithmetic number, because the mean of its divisors is an integer number (6534).

2⁴³⁵³⁰ is an apocalyptic number.

43530 is an abundant number, since it is smaller than the sum of its proper divisors (61014).

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

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52272).

43530 is a wasteful number, since it uses less digits than its factorization.

43530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1461.

The product of its (nonzero) digits is 180, while the sum is 15.

The square root of 43530 is about 208.6384432457. The cubic root of 43530 is about 35.1773313068.

It can be divided in two parts, 435 and 30, that added together give a triangular number (465 = T₃₀).

The spelling of 43530 in words is "forty-three thousand, five hundred thirty".