43621541 has 8 divisors (see below), whose sum is σ = 46376064. Its totient is φ = 40888000.

The previous prime is 43621537. The next prime is 43621573. The reversal of 43621541 is 14512634.

43621541 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 43621541 - 2² = 43621537 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 43621541.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43620541) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 845 + ... + 9378.

It is an arithmetic number, because the mean of its divisors is an integer number (5797008).

Almost surely, 2^43621541 is an apocalyptic number.

It is an amenable number.

43621541 is a deficient number, since it is larger than the sum of its proper divisors (2754523).

43621541 is a wasteful number, since it uses less digits than its factorization.

43621541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10491.

The product of its digits is 2880, while the sum is 26.

The square root of 43621541 is about 6604.6605514591. The cubic root of 43621541 is about 352.0197265331.

The spelling of 43621541 in words is "forty-three million, six hundred twenty-one thousand, five hundred forty-one".