43261056 has 144 divisors (see below), whose sum is σ = 134675190. Its totient is φ = 13283328.

The previous prime is 43261051. The next prime is 43261061. The reversal of 43261056 is 65016234.

43261056 is a `hidden beast` number, since 43 + 2 + 610 + 5 + 6 = 666.

It is an interprime number because it is at equal distance from previous prime (43261051) and next prime (43261061).

It can be written as a sum of positive squares in only one way, i.e., 31809600 + 11451456 = 5640^2 + 3384^2 .

It is a tau number, because it is divible by the number of its divisors (144).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43261051) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 920425 + ... + 920471.

Almost surely, 2^43261056 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 43261056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67337595).

43261056 is an abundant number, since it is smaller than the sum of its proper divisors (91414134).

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

43261056 is a wasteful number, since it uses less digits than its factorization.

43261056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131 (or 69 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 43261056 is about 6577.3137373855. The cubic root of 43261056 is about 351.0473552393.

The spelling of 43261056 in words is "forty-three million, two hundred sixty-one thousand, fifty-six".