52155012220 has 24 divisors (see below), whose sum is σ = 109555022304. Its totient is φ = 20856386496.

The previous prime is 52155012109. The next prime is 52155012241. The reversal of 52155012220 is 2221055125.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 274624 + ... + 423943.

It is an arithmetic number, because the mean of its divisors is an integer number (4564792596).

Almost surely, 2^52155012220 is an apocalyptic number.

It is an amenable number.

52155012220 is an abundant number, since it is smaller than the sum of its proper divisors (57400010084).

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

52155012220 is a wasteful number, since it uses less digits than its factorization.

52155012220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 702309 (or 702307 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 25.

Adding to 52155012220 its reverse (2221055125), we get a palindrome (54376067345).

The spelling of 52155012220 in words is "fifty-two billion, one hundred fifty-five million, twelve thousand, two hundred twenty".