53666544 has 40 divisors (see below), whose sum is σ = 144669312. Its totient is φ = 17110720.

The previous prime is 53666513. The next prime is 53666563. The reversal of 53666544 is 44566635.

53666544 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 23202 + ... + 25409.

Almost surely, 2^53666544 is an apocalyptic number.

It is an amenable number.

53666544 is an abundant number, since it is smaller than the sum of its proper divisors (91002768).

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

53666544 is a wasteful number, since it uses less digits than its factorization.

53666544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48645 (or 48639 counting only the distinct ones).

The product of its digits is 259200, while the sum is 39.

The square root of 53666544 is about 7325.7452863173. The cubic root of 53666544 is about 377.1966927608.

Subtracting from 53666544 its reverse (44566635), we obtain a palindrome (9099909).

The spelling of 53666544 in words is "fifty-three million, six hundred sixty-six thousand, five hundred forty-four".