52185405 has 8 divisors (see below), whose sum is σ = 83496672. Its totient is φ = 27832208.

The previous prime is 52185391. The next prime is 52185409. The reversal of 52185405 is 50458125.

52185405 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.

It is a cyclic number.

It is not a de Polignac number, because 52185405 - 2⁸ = 52185149 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52185409) 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 7 ways as a sum of consecutive naturals, for example, 1739499 + ... + 1739528.

It is an arithmetic number, because the mean of its divisors is an integer number (10437084).

Almost surely, 2^52185405 is an apocalyptic number.

It is an amenable number.

52185405 is a deficient number, since it is larger than the sum of its proper divisors (31311267).

52185405 is a wasteful number, since it uses less digits than its factorization.

52185405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3479035.

The product of its (nonzero) digits is 8000, while the sum is 30.

The square root of 52185405 is about 7223.9466360155. The cubic root of 52185405 is about 373.6941960584.

The spelling of 52185405 in words is "fifty-two million, one hundred eighty-five thousand, four hundred five".