5561000 has 64 divisors (see below), whose sum is σ = 13366080. Its totient is φ = 2164800.

The previous prime is 5560957. The next prime is 5561029. The reversal of 5561000 is 1655.

It is a self number, because there is not a number n which added to its sum of digits gives 5561000.

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 15 ways as a sum of consecutive naturals, for example, 66959 + ... + 67041.

It is an arithmetic number, because the mean of its divisors is an integer number (208845).

Almost surely, 2^5561000 is an apocalyptic number.

5561000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5561000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6683040).

5561000 is an abundant number, since it is smaller than the sum of its proper divisors (7805080).

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

5561000 is a wasteful number, since it uses less digits than its factorization.

5561000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171 (or 157 counting only the distinct ones).

The product of its (nonzero) digits is 150, while the sum is 17.

The square root of 5561000 is about 2358.1772622091. The cubic root of 5561000 is about 177.1675984966.

Adding to 5561000 its reverse (1655), we get a palindrome (5562655).

The spelling of 5561000 in words is "five million, five hundred sixty-one thousand".