52181325 has 54 divisors (see below), whose sum is σ = 108744714. Its totient is φ = 23849280.

The previous prime is 52181303. The next prime is 52181329. The reversal of 52181325 is 52318125.

It is a happy number.

52181325 is a `hidden beast` number, since 521 + 8 + 132 + 5 = 666.

52181325 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 298116 + 51883209 = 546^2 + 7203^2 .

It is not a de Polignac number, because 52181325 - 2⁵ = 52181293 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52181329) 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 53 ways as a sum of consecutive naturals, for example, 8659 + ... + 13391.

It is an arithmetic number, because the mean of its divisors is an integer number (2013791).

Almost surely, 2^52181325 is an apocalyptic number.

It is an amenable number.

52181325 is an abundant number, since it is smaller than the sum of its proper divisors (56563389).

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

52181325 is a wasteful number, since it uses less digits than its factorization.

52181325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4763 (or 4748 counting only the distinct ones).

The product of its digits is 2400, while the sum is 27.

The square root of 52181325 is about 7223.6642363831. The cubic root of 52181325 is about 373.6844569876.

The spelling of 52181325 in words is "fifty-two million, one hundred eighty-one thousand, three hundred twenty-five".