5590021 has 4 divisors (see below), whose sum is σ = 5612544. Its totient is φ = 5567500.

The previous prime is 5590019. The next prime is 5590037. The reversal of 5590021 is 1200955.

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 cyclic number.

It is not a de Polignac number, because 5590021 - 2¹ = 5590019 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 5589974 and 5590001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5590051) 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, 10885 + ... + 11386.

It is an arithmetic number, because the mean of its divisors is an integer number (1403136).

Almost surely, 2^5590021 is an apocalyptic number.

It is an amenable number.

5590021 is a deficient number, since it is larger than the sum of its proper divisors (22523).

5590021 is a wasteful number, since it uses less digits than its factorization.

5590021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22522.

The product of its (nonzero) digits is 450, while the sum is 22.

The square root of 5590021 is about 2364.3225245300. The cubic root of 5590021 is about 177.4752567507.

Adding to 5590021 its reverse (1200955), we get a palindrome (6790976).

The spelling of 5590021 in words is "five million, five hundred ninety thousand, twenty-one".