53909864 has 16 divisors (see below), whose sum is σ = 101160900. Its totient is φ = 26933632.

The previous prime is 53909833. The next prime is 53909879. The reversal of 53909864 is 46890935.

53909864 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 2 ways, for example, as 53904964 + 4900 = 7342^2 + 70^2 .

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, 14924 + ... + 18180.

Almost surely, 2^53909864 is an apocalyptic number.

It is an amenable number.

53909864 is a deficient number, since it is larger than the sum of its proper divisors (47251036).

53909864 is a wasteful number, since it uses less digits than its factorization.

53909864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5332 (or 5328 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 44.

The square root of 53909864 is about 7342.3336889575. Note that the first 3 decimals coincide. The cubic root of 53909864 is about 377.7658936925.

The spelling of 53909864 in words is "fifty-three million, nine hundred nine thousand, eight hundred sixty-four".