5251220 has 48 divisors (see below), whose sum is σ = 12512640. Its totient is φ = 1835136.

The previous prime is 5251217. The next prime is 5251229. The reversal of 5251220 is 221525.

5251220 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×5251220² = 55150622976800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5251229) 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, 4409 + ... + 5471.

It is an arithmetic number, because the mean of its divisors is an integer number (260680).

Almost surely, 2^5251220 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 5251220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6256320).

5251220 is an abundant number, since it is smaller than the sum of its proper divisors (7261420).

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

5251220 is a wasteful number, since it uses less digits than its factorization.

5251220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1104 (or 1102 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 17.

The square root of 5251220 is about 2291.5540578394. The cubic root of 5251220 is about 173.8147939080.

Adding to 5251220 its reverse (221525), we get a palindrome (5472745).

The spelling of 5251220 in words is "five million, two hundred fifty-one thousand, two hundred twenty".