53218535 has 8 divisors (see below), whose sum is σ = 64909536. Its totient is φ = 41876640.

The previous prime is 53218507. The next prime is 53218541. The reversal of 53218535 is 53581235.

53218535 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 not a de Polignac number, because 53218535 - 2¹² = 53214439 is a prime.

It is a Duffinian 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 7 ways as a sum of consecutive naturals, for example, 86939 + ... + 87548.

It is an arithmetic number, because the mean of its divisors is an integer number (8113692).

Almost surely, 2^53218535 is an apocalyptic number.

53218535 is a deficient number, since it is larger than the sum of its proper divisors (11691001).

53218535 is a wasteful number, since it uses less digits than its factorization.

53218535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174553.

The product of its digits is 18000, while the sum is 32.

The square root of 53218535 is about 7295.1034948107. The cubic root of 53218535 is about 376.1441441262.

The spelling of 53218535 in words is "fifty-three million, two hundred eighteen thousand, five hundred thirty-five".