43580 has 12 divisors (see below), whose sum is σ = 91560. Its totient is φ = 17424.

The previous prime is 43579. The next prime is 43591. The reversal of 43580 is 8534.

43580 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 2179 = 43580 / (4 + 3 + 5 + 8 + 0).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1070 + ... + 1109.

It is an arithmetic number, because the mean of its divisors is an integer number (7630).

2⁴³⁵⁸⁰ is an apocalyptic number.

It is an amenable number.

43580 is an abundant number, since it is smaller than the sum of its proper divisors (47980).

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 (45780).

43580 is a wasteful number, since it uses less digits than its factorization.

43580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2188 (or 2186 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 43580 is about 208.7582333706. The cubic root of 43580 is about 35.1907947692.

It can be divided in two parts, 435 and 80, that added together give a palindrome (515).

The spelling of 43580 in words is "forty-three thousand, five hundred eighty".