53564218 has 20 divisors (see below), whose sum is σ = 85887450. Its totient is φ = 25024440.

The previous prime is 53564213. The next prime is 53564219. The reversal of 53564218 is 81246535.

53564218 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 only one way, i.e., 45252529 + 8311689 = 6727^2 + 2883^2 .

It is not an unprimeable number, because it can be changed into a prime (53564213) 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 9 ways as a sum of consecutive naturals, for example, 1727863 + ... + 1727893.

Almost surely, 2^53564218 is an apocalyptic number.

53564218 is a gapful number since it is divisible by the number (58) formed by its first and last digit.

53564218 is a deficient number, since it is larger than the sum of its proper divisors (32323232).

53564218 is an frugal number, since it uses more digits than its factorization.

53564218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155 (or 62 counting only the distinct ones).

The product of its digits is 28800, while the sum is 34.

The square root of 53564218 is about 7318.7579547352. The cubic root of 53564218 is about 376.9568065865.

The spelling of 53564218 in words is "fifty-three million, five hundred sixty-four thousand, two hundred eighteen".