52520450220 has 144 divisors (see below), whose sum is σ = 188814382848. Its totient is φ = 12004666560.

The previous prime is 52520450209. The next prime is 52520450243. The reversal of 52520450220 is 2205402525.

It is a super-2 number, since 2×52520450220² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

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 47 ways as a sum of consecutive naturals, for example, 737886 + ... + 805925.

It is an arithmetic number, because the mean of its divisors is an integer number (1311210992).

Almost surely, 2^52520450220 is an apocalyptic number.

It is an amenable number.

52520450220 is an abundant number, since it is smaller than the sum of its proper divisors (136293932628).

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

52520450220 is a wasteful number, since it uses less digits than its factorization.

52520450220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1543842 (or 1543828 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 27.

Adding to 52520450220 its reverse (2205402525), we get a palindrome (54725852745).

The spelling of 52520450220 in words is "fifty-two billion, five hundred twenty million, four hundred fifty thousand, two hundred twenty".