5621388 has 24 divisors (see below), whose sum is σ = 13396992. Its totient is φ = 1833744.

The previous prime is 5621383. The next prime is 5621417. The reversal of 5621388 is 8831265.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (5621383) 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, 4420 + ... + 5547.

It is an arithmetic number, because the mean of its divisors is an integer number (558208).

Almost surely, 2^5621388 is an apocalyptic number.

It is an amenable number.

5621388 is an abundant number, since it is smaller than the sum of its proper divisors (7775604).

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

5621388 is a wasteful number, since it uses less digits than its factorization.

5621388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10021 (or 10019 counting only the distinct ones).

The product of its digits is 11520, while the sum is 33.

The square root of 5621388 is about 2370.9466463841. The cubic root of 5621388 is about 177.8065904111.

The spelling of 5621388 in words is "five million, six hundred twenty-one thousand, three hundred eighty-eight".