5621020 has 24 divisors (see below), whose sum is σ = 11902464. Its totient is φ = 2229696.

The previous prime is 5620997. The next prime is 5621023. The reversal of 5621020 is 201265.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 5620985 and 5621003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5621023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1434 + ... + 3646.

It is an arithmetic number, because the mean of its divisors is an integer number (495936).

Almost surely, 2^5621020 is an apocalyptic number.

It is an amenable number.

5621020 is an abundant number, since it is smaller than the sum of its proper divisors (6281444).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5621020 is a wasteful number, since it uses less digits than its factorization.

5621020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2349 (or 2347 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 5621020 is about 2370.8690389813. The cubic root of 5621020 is about 177.8027103342.

Adding to 5621020 its reverse (201265), we get a palindrome (5822285).

The spelling of 5621020 in words is "five million, six hundred twenty-one thousand, twenty".