52400218 has 8 divisors (see below), whose sum is σ = 84646548. Its totient is φ = 24184704.

The previous prime is 52400213. The next prime is 52400219. The reversal of 52400218 is 81200425.

52400218 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 2 ways, for example, as 51739249 + 660969 = 7193^2 + 813^2 .

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

It is not an unprimeable number, because it can be changed into a prime (52400213) 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 3 ways as a sum of consecutive naturals, for example, 1007671 + ... + 1007722.

Almost surely, 2^52400218 is an apocalyptic number.

52400218 is a deficient number, since it is larger than the sum of its proper divisors (32246330).

52400218 is a wasteful number, since it uses less digits than its factorization.

52400218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2015408.

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 52400218 is about 7238.7994861027. The cubic root of 52400218 is about 374.2062452091.

The spelling of 52400218 in words is "fifty-two million, four hundred thousand, two hundred eighteen".