53644164 has 24 divisors (see below), whose sum is σ = 143051328. Its totient is φ = 15326880.

The previous prime is 53644159. The next prime is 53644181. The reversal of 53644164 is 46144635.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 319227 + ... + 319394.

It is an arithmetic number, because the mean of its divisors is an integer number (5960472).

Almost surely, 2^53644164 is an apocalyptic number.

It is an amenable number.

53644164 is an abundant number, since it is smaller than the sum of its proper divisors (89407164).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

53644164 is a wasteful number, since it uses less digits than its factorization.

53644164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 638635 (or 638633 counting only the distinct ones).

The product of its digits is 34560, while the sum is 33.

The square root of 53644164 is about 7324.2176373999. The cubic root of 53644164 is about 377.1442526677.

Adding to 53644164 its reverse (46144635), we get a palindrome (99788799).

The spelling of 53644164 in words is "fifty-three million, six hundred forty-four thousand, one hundred sixty-four".