53508647 has 4 divisors (see below), whose sum is σ = 53533536. Its totient is φ = 53483760.

The previous prime is 53508629. The next prime is 53508659. The reversal of 53508647 is 74680535.

53508647 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53508647 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 53508647.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53508347) 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 3 ways as a sum of consecutive naturals, for example, 8879 + ... + 13632.

It is an arithmetic number, because the mean of its divisors is an integer number (13383384).

Almost surely, 2^53508647 is an apocalyptic number.

53508647 is a deficient number, since it is larger than the sum of its proper divisors (24889).

53508647 is a wasteful number, since it uses less digits than its factorization.

53508647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24888.

The product of its (nonzero) digits is 100800, while the sum is 38.

The square root of 53508647 is about 7314.9604920327. The cubic root of 53508647 is about 376.8264016515.

The spelling of 53508647 in words is "fifty-three million, five hundred eight thousand, six hundred forty-seven".