52815500 has 48 divisors (see below), whose sum is σ = 117009984. Its totient is φ = 20822400.

The previous prime is 52815493. The next prime is 52815509. The reversal of 52815500 is 551825.

52815500 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 52815500.

It is not an unprimeable number, because it can be changed into a prime (52815509) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 35777 + ... + 37223.

It is an arithmetic number, because the mean of its divisors is an integer number (2437708).

Almost surely, 2^52815500 is an apocalyptic number.

52815500 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 52815500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58504992).

52815500 is an abundant number, since it is smaller than the sum of its proper divisors (64194484).

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

52815500 is a wasteful number, since it uses less digits than its factorization.

52815500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1539 (or 1527 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 26.

The square root of 52815500 is about 7267.4273302180. The cubic root of 52815500 is about 375.1921977728.

The spelling of 52815500 in words is "fifty-two million, eight hundred fifteen thousand, five hundred".