43681057 has 8 divisors (see below), whose sum is σ = 52548800. Its totient is φ = 35470224.

The previous prime is 43681051. The next prime is 43681061. The reversal of 43681057 is 75018634.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 43681057 - 2³ = 43681049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43681051) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 164082 + ... + 164347.

It is an arithmetic number, because the mean of its divisors is an integer number (6568600).

Almost surely, 2^43681057 is an apocalyptic number.

It is an amenable number.

43681057 is a deficient number, since it is larger than the sum of its proper divisors (8867743).

43681057 is a wasteful number, since it uses less digits than its factorization.

43681057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 328455.

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 43681057 is about 6609.1646219473. The cubic root of 43681057 is about 352.1797490399.

The spelling of 43681057 in words is "forty-three million, six hundred eighty-one thousand, fifty-seven".