5621424 has 60 divisors (see below), whose sum is σ = 15563736. Its totient is φ = 1742336.

The previous prime is 5621423. The next prime is 5621437. The reversal of 5621424 is 4241265.

It is a hoax number, since the sum of its digits (24) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a junction number, because it is equal to n+sod(n) for n = 5621394 and 5621403.

It is not an unprimeable number, because it can be changed into a prime (5621423) 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 11 ways as a sum of consecutive naturals, for example, 67687 + ... + 67769.

Almost surely, 2^5621424 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5621424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7781868).

5621424 is an abundant number, since it is smaller than the sum of its proper divisors (9942312).

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

5621424 is a wasteful number, since it uses less digits than its factorization.

5621424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194 (or 105 counting only the distinct ones).

The product of its digits is 1920, while the sum is 24.

The square root of 5621424 is about 2370.9542382762. The cubic root of 5621424 is about 177.8069699747.

Adding to 5621424 its reverse (4241265), we get a palindrome (9862689).

The spelling of 5621424 in words is "five million, six hundred twenty-one thousand, four hundred twenty-four".