5543921 has 4 divisors (see below), whose sum is σ = 5870052. Its totient is φ = 5217792.

The previous prime is 5543917. The next prime is 5543927. The reversal of 5543921 is 1293455.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1293455 = 5 ⋅258691.

It can be written as a sum of positive squares in 2 ways, for example, as 4840000 + 703921 = 2200^2 + 839^2 .

It is a cyclic number.

It is not a de Polignac number, because 5543921 - 2² = 5543917 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5543927) 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 3 ways as a sum of consecutive naturals, for example, 163040 + ... + 163073.

It is an arithmetic number, because the mean of its divisors is an integer number (1467513).

Almost surely, 2^5543921 is an apocalyptic number.

It is an amenable number.

5543921 is a deficient number, since it is larger than the sum of its proper divisors (326131).

5543921 is a wasteful number, since it uses less digits than its factorization.

5543921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 326130.

The product of its digits is 5400, while the sum is 29.

The square root of 5543921 is about 2354.5532484953. The cubic root of 5543921 is about 176.9860395216.

The spelling of 5543921 in words is "five million, five hundred forty-three thousand, nine hundred twenty-one".