5443621 has 4 divisors (see below), whose sum is σ = 5763852. Its totient is φ = 5123392.

The previous prime is 5443609. The next prime is 5443639. The reversal of 5443621 is 1263445.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1718721 + 3724900 = 1311^2 + 1930^2 .

It is not a de Polignac number, because 5443621 - 2¹¹ = 5441573 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 (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, 160090 + ... + 160123.

It is an arithmetic number, because the mean of its divisors is an integer number (1440963).

Almost surely, 2^5443621 is an apocalyptic number.

It is an amenable number.

5443621 is a deficient number, since it is larger than the sum of its proper divisors (320231).

5443621 is a wasteful number, since it uses less digits than its factorization.

5443621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320230.

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

The square root of 5443621 is about 2333.1568742800. The cubic root of 5443621 is about 175.9122000949.

The spelling of 5443621 in words is "five million, four hundred forty-three thousand, six hundred twenty-one".