5145220 has 48 divisors (see below), whose sum is σ = 11778480. Its totient is φ = 1880064.

The previous prime is 5145211. The next prime is 5145233. The reversal of 5145220 is 225415.

5145220 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 1397124 + 3748096 = 1182^2 + 1936^2 .

It is an Ulam number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12376 + ... + 12784.

It is an arithmetic number, because the mean of its divisors is an integer number (245385).

Almost surely, 2^5145220 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 5145220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5889240).

5145220 is an abundant number, since it is smaller than the sum of its proper divisors (6633260).

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

5145220 is a wasteful number, since it uses less digits than its factorization.

5145220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 472 (or 470 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 19.

The square root of 5145220 is about 2268.3077392629. The cubic root of 5145220 is about 172.6373057878.

The spelling of 5145220 in words is "five million, one hundred forty-five thousand, two hundred twenty".