53015023220 has 72 divisors (see below), whose sum is σ = 118664495208. Its totient is φ = 19890720000.

The previous prime is 53015023213. The next prime is 53015023247. The reversal of 53015023220 is 2232051035.

It can be written as a sum of positive squares in 4 ways, for example, as 18075189136 + 34939834084 = 134444^2 + 186922^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 692870 + ... + 765570.

It is an arithmetic number, because the mean of its divisors is an integer number (1648117989).

Almost surely, 2^53015023220 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 53015023220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59332247604).

53015023220 is an abundant number, since it is smaller than the sum of its proper divisors (65649471988).

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

53015023220 is a wasteful number, since it uses less digits than its factorization.

53015023220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72849 (or 72828 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 23.

Adding to 53015023220 its reverse (2232051035), we get a palindrome (55247074255).

The spelling of 53015023220 in words is "fifty-three billion, fifteen million, twenty-three thousand, two hundred twenty".