43130556 has 84 divisors (see below), whose sum is σ = 129393712. Its totient is φ = 12317184.

The previous prime is 43130539. The next prime is 43130573. The reversal of 43130556 is 65503134.

43130556 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (43130539) and next prime (43130573).

It is a tau number, because it is divible by the number of its divisors (84).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 19356 + ... + 21468.

Almost surely, 2^43130556 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 43130556, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64696856).

43130556 is an abundant number, since it is smaller than the sum of its proper divisors (86263156).

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

43130556 is a wasteful number, since it uses less digits than its factorization.

43130556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2142 (or 2125 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 27.

The square root of 43130556 is about 6567.3857812679. The cubic root of 43130556 is about 350.6940134106.

The spelling of 43130556 in words is "forty-three million, one hundred thirty thousand, five hundred fifty-six".