52500405 has 16 divisors (see below), whose sum is σ = 85014720. Its totient is φ = 27662208.

The previous prime is 52500397. The next prime is 52500431. The reversal of 52500405 is 50400525.

52500405 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 52500405 - 2³ = 52500397 is a prime.

It is a Curzon number.

It is a congruent 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 15 ways as a sum of consecutive naturals, for example, 19840 + ... + 22329.

It is an arithmetic number, because the mean of its divisors is an integer number (5313420).

Almost surely, 2^52500405 is an apocalyptic number.

It is an amenable number.

52500405 is a deficient number, since it is larger than the sum of its proper divisors (32514315).

52500405 is a wasteful number, since it uses less digits than its factorization.

52500405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42260.

The product of its (nonzero) digits is 1000, while the sum is 21.

The square root of 52500405 is about 7245.7163206960. The cubic root of 52500405 is about 374.4445822135. Note that the first 3 decimals are identical.

The spelling of 52500405 in words is "fifty-two million, five hundred thousand, four hundred five".