5220621 has 24 divisors (see below), whose sum is σ = 8686080. Its totient is φ = 2959776.

The previous prime is 5220613. The next prime is 5220641. The reversal of 5220621 is 1260225.

5220621 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 5220621 - 2³ = 5220613 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 5220594 and 5220603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5220601) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10660 + ... + 11138.

It is an arithmetic number, because the mean of its divisors is an integer number (361920).

Almost surely, 2^5220621 is an apocalyptic number.

It is an amenable number.

5220621 is a deficient number, since it is larger than the sum of its proper divisors (3465459).

5220621 is a wasteful number, since it uses less digits than its factorization.

5220621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 665 (or 662 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 5220621 is about 2284.8678298755. The cubic root of 5220621 is about 173.4765282026.

Adding to 5220621 its reverse (1260225), we get a palindrome (6480846).

The spelling of 5220621 in words is "five million, two hundred twenty thousand, six hundred twenty-one".