52181418 has 8 divisors (see below), whose sum is σ = 104362848. Its totient is φ = 17393804.

The previous prime is 52181399. The next prime is 52181443. The reversal of 52181418 is 81418125.

It is a happy number.

52181418 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

52181418 is an admirable number.

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

It is a Curzon number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 4348446 + ... + 4348457.

It is an arithmetic number, because the mean of its divisors is an integer number (13045356).

Almost surely, 2^52181418 is an apocalyptic number.

52181418 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

52181418 is a wasteful number, since it uses less digits than its factorization.

52181418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8696908.

The product of its digits is 2560, while the sum is 30.

The square root of 52181418 is about 7223.6706735565. The cubic root of 52181418 is about 373.6846789868.

The spelling of 52181418 in words is "fifty-two million, one hundred eighty-one thousand, four hundred eighteen".