52505250 has 128 divisors (see below), whose sum is σ = 152934912. Its totient is φ = 11750400.

The previous prime is 52505249. The next prime is 52505261. The reversal of 52505250 is 5250525.

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 52505250.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 383182 + ... + 383318.

It is an arithmetic number, because the mean of its divisors is an integer number (1194804).

Almost surely, 2^52505250 is an apocalyptic number.

52505250 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 52505250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76467456).

52505250 is an abundant number, since it is smaller than the sum of its proper divisors (100429662).

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

52505250 is a wasteful number, since it uses less digits than its factorization.

52505250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237 (or 227 counting only the distinct ones).

The product of its (nonzero) digits is 2500, while the sum is 24.

The square root of 52505250 is about 7246.0506484567. The cubic root of 52505250 is about 374.4561003989.

Adding to 52505250 its reverse (5250525), we get a palindrome (57755775).

The spelling of 52505250 in words is "fifty-two million, five hundred five thousand, two hundred fifty".