5221439 has 4 divisors (see below), whose sum is σ = 5235456. Its totient is φ = 5207424.

The previous prime is 5221399. The next prime is 5221451. The reversal of 5221439 is 9341225.

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

It is a cyclic number.

It is not a de Polignac number, because 5221439 - 2²⁰ = 4172863 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 (5221459) 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, 6434 + ... + 7199.

It is an arithmetic number, because the mean of its divisors is an integer number (1308864).

Almost surely, 2^5221439 is an apocalyptic number.

5221439 is a deficient number, since it is larger than the sum of its proper divisors (14017).

5221439 is a wasteful number, since it uses less digits than its factorization.

5221439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14016.

The product of its digits is 2160, while the sum is 26.

The square root of 5221439 is about 2285.0468266537. The cubic root of 5221439 is about 173.4855881968.

The spelling of 5221439 in words is "five million, two hundred twenty-one thousand, four hundred thirty-nine".