5543021 has 4 divisors (see below), whose sum is σ = 6046944. Its totient is φ = 5039100.

The previous prime is 5542993. The next prime is 5543029. The reversal of 5543021 is 1203455.

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 de Polignac number, because none of the positive numbers 2^k-5543021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 5542984 and 5543002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5543029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 251945 + ... + 251966.

It is an arithmetic number, because the mean of its divisors is an integer number (1511736).

Almost surely, 2^5543021 is an apocalyptic number.

It is an amenable number.

5543021 is a deficient number, since it is larger than the sum of its proper divisors (503923).

5543021 is a wasteful number, since it uses less digits than its factorization.

5543021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 503922.

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 5543021 is about 2354.3621216797. The cubic root of 5543021 is about 176.9764617001.

Adding to 5543021 its reverse (1203455), we get a palindrome (6746476).

The spelling of 5543021 in words is "five million, five hundred forty-three thousand, twenty-one".