53218653 has 16 divisors (see below), whose sum is σ = 75335040. Its totient is φ = 33302016.

The previous prime is 53218651. The next prime is 53218663. The reversal of 53218653 is 35681235.

53218653 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 53218653 - 2¹ = 53218651 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53218651) 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 15 ways as a sum of consecutive naturals, for example, 21201 + ... + 23577.

It is an arithmetic number, because the mean of its divisors is an integer number (4708440).

Almost surely, 2^53218653 is an apocalyptic number.

It is an amenable number.

53218653 is a deficient number, since it is larger than the sum of its proper divisors (22116387).

53218653 is a wasteful number, since it uses less digits than its factorization.

53218653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2836.

The product of its digits is 21600, while the sum is 33.

The square root of 53218653 is about 7295.1115824228. Note that the first 3 decimals coincide. The cubic root of 53218653 is about 376.1444221307.

Adding to 53218653 its reverse (35681235), we get a palindrome (88899888).

The spelling of 53218653 in words is "fifty-three million, two hundred eighteen thousand, six hundred fifty-three".