5312220 has 96 divisors (see below), whose sum is σ = 15966720. Its totient is φ = 1317120.

The previous prime is 5312213. The next prime is 5312221. The reversal of 5312220 is 222135.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 5312220.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5312221) 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 31 ways as a sum of consecutive naturals, for example, 74785 + ... + 74855.

It is an arithmetic number, because the mean of its divisors is an integer number (166320).

Almost surely, 2^5312220 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 5312220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7983360).

5312220 is an abundant number, since it is smaller than the sum of its proper divisors (10654500).

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

5312220 is a wasteful number, since it uses less digits than its factorization.

5312220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155 (or 153 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 15.

The square root of 5312220 is about 2304.8253729947. The cubic root of 5312220 is about 174.4852355989.

Adding to 5312220 its reverse (222135), we get a palindrome (5534355).

The spelling of 5312220 in words is "five million, three hundred twelve thousand, two hundred twenty".