53438664 has 64 divisors (see below), whose sum is σ = 137088000. Its totient is φ = 17354304.

The previous prime is 53438657. The next prime is 53438669. The reversal of 53438664 is 46683435.

53438664 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (53438669) 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, 268437 + ... + 268635.

It is an arithmetic number, because the mean of its divisors is an integer number (2142000).

Almost surely, 2^53438664 is an apocalyptic number.

It is an amenable number.

53438664 is an abundant number, since it is smaller than the sum of its proper divisors (83649336).

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

53438664 is a wasteful number, since it uses less digits than its factorization.

53438664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 442 (or 438 counting only the distinct ones).

The product of its digits is 207360, while the sum is 39.

The square root of 53438664 is about 7310.1753740933. The cubic root of 53438664 is about 376.6620484811.

The spelling of 53438664 in words is "fifty-three million, four hundred thirty-eight thousand, six hundred sixty-four".