5661444 has 48 divisors (see below), whose sum is σ = 13942656. Its totient is φ = 1785600.

The previous prime is 5661421. The next prime is 5661451. The reversal of 5661444 is 4441665.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18049 + ... + 18359.

It is an arithmetic number, because the mean of its divisors is an integer number (290472).

Almost surely, 2^5661444 is an apocalyptic number.

It is an amenable number.

5661444 is an abundant number, since it is smaller than the sum of its proper divisors (8281212).

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

5661444 is a wasteful number, since it uses less digits than its factorization.

5661444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 396 (or 394 counting only the distinct ones).

The product of its digits is 11520, while the sum is 30.

The square root of 5661444 is about 2379.3789105563. The cubic root of 5661444 is about 178.2279199616.

It can be divided in two parts, 5661 and 444, that added together give a triangular number (6105 = T₁₁₀).

The spelling of 5661444 in words is "five million, six hundred sixty-one thousand, four hundred forty-four".