5501820 has 48 divisors (see below), whose sum is σ = 15740928. Its totient is φ = 1435200.

The previous prime is 5501819. The next prime is 5501827. The reversal of 5501820 is 281055.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5501827) 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, 1845 + ... + 3795.

It is an arithmetic number, because the mean of its divisors is an integer number (327936).

Almost surely, 2^5501820 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 5501820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7870464).

5501820 is an abundant number, since it is smaller than the sum of its proper divisors (10239108).

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

5501820 is a wasteful number, since it uses less digits than its factorization.

5501820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2010 (or 2008 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 21.

The square root of 5501820 is about 2345.5958731205. The cubic root of 5501820 is about 176.5368850250.

Adding to 5501820 its reverse (281055), we get a palindrome (5782875).

The spelling of 5501820 in words is "five million, five hundred one thousand, eight hundred twenty".