5443721 has 4 divisors (see below), whose sum is σ = 5509392. Its totient is φ = 5378052.

The previous prime is 5443673. The next prime is 5443727. The reversal of 5443721 is 1273445.

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.

It is a cyclic number.

It is not a de Polignac number, because 5443721 - 2¹⁴ = 5427337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5443727) 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, 32711 + ... + 32876.

It is an arithmetic number, because the mean of its divisors is an integer number (1377348).

Almost surely, 2^5443721 is an apocalyptic number.

It is an amenable number.

5443721 is a deficient number, since it is larger than the sum of its proper divisors (65671).

5443721 is an equidigital number, since it uses as much as digits as its factorization.

5443721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65670.

The product of its digits is 3360, while the sum is 26.

The square root of 5443721 is about 2333.1783043737. The cubic root of 5443721 is about 175.9132772647.

The spelling of 5443721 in words is "five million, four hundred forty-three thousand, seven hundred twenty-one".