5540444 has 48 divisors (see below), whose sum is σ = 12343296. Its totient is φ = 2116800.

The previous prime is 5540443. The next prime is 5540449. The reversal of 5540444 is 4440455.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5540441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11039 + ... + 11529.

It is an arithmetic number, because the mean of its divisors is an integer number (257152).

Almost surely, 2^5540444 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 5540444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6171648).

5540444 is an abundant number, since it is smaller than the sum of its proper divisors (6802852).

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

5540444 is a wasteful number, since it uses less digits than its factorization.

5540444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 546 (or 544 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 26.

The square root of 5540444 is about 2353.8147760603. The cubic root of 5540444 is about 176.9490314693.

Adding to 5540444 its reverse (4440455), we get a palindrome (9980899).

The spelling of 5540444 in words is "five million, five hundred forty thousand, four hundred forty-four".