5621213 has 4 divisors (see below), whose sum is σ = 6053628. Its totient is φ = 5188800.

The previous prime is 5621197. The next prime is 5621221. The reversal of 5621213 is 3121265.

5621213 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2617924 + 3003289 = 1618^2 + 1733^2 .

It is a cyclic number.

It is not a de Polignac number, because 5621213 - 2⁴ = 5621197 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5621243) 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, 216188 + ... + 216213.

It is an arithmetic number, because the mean of its divisors is an integer number (1513407).

Almost surely, 2^5621213 is an apocalyptic number.

It is an amenable number.

5621213 is a deficient number, since it is larger than the sum of its proper divisors (432415).

5621213 is a wasteful number, since it uses less digits than its factorization.

5621213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 432414.

The product of its digits is 360, while the sum is 20.

The square root of 5621213 is about 2370.9097410066. The cubic root of 5621213 is about 177.8047452869.

Adding to 5621213 its reverse (3121265), we get a palindrome (8742478).

The spelling of 5621213 in words is "five million, six hundred twenty-one thousand, two hundred thirteen".