52403220 has 96 divisors (see below), whose sum is σ = 166199040. Its totient is φ = 13703040.

The previous prime is 52403213. The next prime is 52403243. The reversal of 52403220 is 2230425.

52403220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 = 52403193 and 52403202.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 27705 + ... + 29535.

It is an arithmetic number, because the mean of its divisors is an integer number (1731240).

Almost surely, 2^52403220 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 52403220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83099520).

52403220 is an abundant number, since it is smaller than the sum of its proper divisors (113795820).

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

52403220 is a wasteful number, since it uses less digits than its factorization.

52403220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1902 (or 1894 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 18.

The square root of 52403220 is about 7239.0068379578. The cubic root of 52403220 is about 374.2133911444.

Adding to 52403220 its reverse (2230425), we get a palindrome (54633645).

The spelling of 52403220 in words is "fifty-two million, four hundred three thousand, two hundred twenty".