53440564 has 12 divisors (see below), whose sum is σ = 94838688. Its totient is φ = 26343800.

The previous prime is 53440553. The next prime is 53440573. The reversal of 53440564 is 46504435.

53440564 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 3 ways as a sum of consecutive naturals, for example, 93802 + ... + 94369.

It is an arithmetic number, because the mean of its divisors is an integer number (7903224).

Almost surely, 2^53440564 is an apocalyptic number.

It is an amenable number.

53440564 is a deficient number, since it is larger than the sum of its proper divisors (41398124).

53440564 is a wasteful number, since it uses less digits than its factorization.

53440564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188246 (or 188244 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 31.

The square root of 53440564 is about 7310.3053287807. The cubic root of 53440564 is about 376.6665124737. Note that the first 3 decimals are identical.

Adding to 53440564 its reverse (46504435), we get a palindrome (99944999).

The spelling of 53440564 in words is "fifty-three million, four hundred forty thousand, five hundred sixty-four".