5201820 has 180 divisors, whose sum is σ = 18600120. Its totient is φ = 1213056.

The previous prime is 5201773. The next prime is 5201827. The reversal of 5201820 is 281025.

It is a tau number, because it is divible by the number of its divisors (180).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 5201793 and 5201802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5201827) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 273771 + ... + 273789.

It is an arithmetic number, because the mean of its divisors is an integer number (103334).

Almost surely, 2^5201820 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 5201820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9300060).

5201820 is an abundant number, since it is smaller than the sum of its proper divisors (13398300).

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

5201820 is a wasteful number, since it uses less digits than its factorization.

5201820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66 (or 42 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 5201820 is about 2280.7498766853. The cubic root of 5201820 is about 173.2680309563.

Adding to 5201820 its reverse (281025), we get a palindrome (5482845).

The spelling of 5201820 in words is "five million, two hundred one thousand, eight hundred twenty".