5558321 has 4 divisors (see below), whose sum is σ = 5571312. Its totient is φ = 5545332.

The previous prime is 5558297. The next prime is 5558323. The reversal of 5558321 is 1238555.

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: 1238555 = 5 ⋅247711.

It is a cyclic number.

It is not a de Polignac number, because 5558321 - 2⁶ = 5558257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5558323) 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, 5831 + ... + 6716.

It is an arithmetic number, because the mean of its divisors is an integer number (1392828).

Almost surely, 2^5558321 is an apocalyptic number.

It is an amenable number.

5558321 is a deficient number, since it is larger than the sum of its proper divisors (12991).

5558321 is a wasteful number, since it uses less digits than its factorization.

5558321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12990.

The product of its digits is 6000, while the sum is 29.

The square root of 5558321 is about 2357.6091703249. The cubic root of 5558321 is about 177.1391438880.

The spelling of 5558321 in words is "five million, five hundred fifty-eight thousand, three hundred twenty-one".