52585133220 has 144 divisors (see below), whose sum is σ = 171812938752. Its totient is φ = 12980309760.

The previous prime is 52585133219. The next prime is 52585133291. The reversal of 52585133220 is 2233158525.

52585133220 is a `hidden beast` number, since 5 + 258 + 51 + 332 + 20 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

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 47 ways as a sum of consecutive naturals, for example, 76527 + ... + 333206.

It is an arithmetic number, because the mean of its divisors is an integer number (1193145408).

Almost surely, 2^52585133220 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 52585133220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85906469376).

52585133220 is an abundant number, since it is smaller than the sum of its proper divisors (119227805532).

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

52585133220 is a wasteful number, since it uses less digits than its factorization.

52585133220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 409802 (or 409797 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 36.

The spelling of 52585133220 in words is "fifty-two billion, five hundred eighty-five million, one hundred thirty-three thousand, two hundred twenty".