5443681 has 4 divisors (see below), whose sum is σ = 5559552. Its totient is φ = 5327812.

The previous prime is 5443673. The next prime is 5443727. The reversal of 5443681 is 1863445.

It is a happy number.

5443681 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1863445 = 5 ⋅372689.

It is a cyclic number.

It is not a de Polignac number, because 5443681 - 2³ = 5443673 is a prime.

It is a super-2 number, since 2×5443681² = 59267325659522, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5443651) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57865 + ... + 57958.

It is an arithmetic number, because the mean of its divisors is an integer number (1389888).

Almost surely, 2^5443681 is an apocalyptic number.

It is an amenable number.

5443681 is a deficient number, since it is larger than the sum of its proper divisors (115871).

5443681 is a wasteful number, since it uses less digits than its factorization.

5443681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115870.

The product of its digits is 11520, while the sum is 31.

The square root of 5443681 is about 2333.1697323598. The cubic root of 5443681 is about 175.9128463983.

It can be divided in two parts, 544 and 3681, that added together give a square (4225 = 65²).

The spelling of 5443681 in words is "five million, four hundred forty-three thousand, six hundred eighty-one".