5561280 has 84 divisors (see below), whose sum is σ = 19138392. Its totient is φ = 1482240.

The previous prime is 5561263. The next prime is 5561299. The reversal of 5561280 is 821655.

It is a congruent number.

It is an unprimeable number.

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, 1915 + ... + 3845.

It is an arithmetic number, because the mean of its divisors is an integer number (227838).

Almost surely, 2^5561280 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 5561280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9569196).

5561280 is an abundant number, since it is smaller than the sum of its proper divisors (13577112).

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

5561280 is a wasteful number, since it uses less digits than its factorization.

5561280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1954 (or 1941 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

The square root of 5561280 is about 2358.2366293483. The cubic root of 5561280 is about 177.1705719483.

The spelling of 5561280 in words is "five million, five hundred sixty-one thousand, two hundred eighty".