43045621 has 8 divisors (see below), whose sum is σ = 45410400. Its totient is φ = 40690800.

The previous prime is 43045609. The next prime is 43045631. The reversal of 43045621 is 12654034.

43045621 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 43045621 - 2⁵ = 43045589 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43045631) 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, 7446 + ... + 11896.

It is an arithmetic number, because the mean of its divisors is an integer number (5676300).

Almost surely, 2^43045621 is an apocalyptic number.

It is an amenable number.

43045621 is a deficient number, since it is larger than the sum of its proper divisors (2364779).

43045621 is a wasteful number, since it uses less digits than its factorization.

43045621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4979.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 43045621 is about 6560.9161707798. The cubic root of 43045621 is about 350.4636603276.

Adding to 43045621 its reverse (12654034), we get a palindrome (55699655).

The spelling of 43045621 in words is "forty-three million, forty-five thousand, six hundred twenty-one".