5155220 has 48 divisors (see below), whose sum is σ = 12918528. Its totient is φ = 1689600.

The previous prime is 5155219. The next prime is 5155229. The reversal of 5155220 is 225515.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 5155192 and 5155201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5155229) by changing a digit.

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, 2420 + ... + 4020.

It is an arithmetic number, because the mean of its divisors is an integer number (269136).

Almost surely, 2^5155220 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 5155220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6459264).

5155220 is an abundant number, since it is smaller than the sum of its proper divisors (7763308).

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

5155220 is a wasteful number, since it uses less digits than its factorization.

5155220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1640 (or 1638 counting only the distinct ones).

The product of its (nonzero) digits is 500, while the sum is 20.

The square root of 5155220 is about 2270.5109557102. The cubic root of 5155220 is about 172.7490765726.

The spelling of 5155220 in words is "five million, one hundred fifty-five thousand, two hundred twenty".