53688869 has 16 divisors (see below), whose sum is σ = 60211200. Its totient is φ = 47537280.

The previous prime is 53688857. The next prime is 53688883. The reversal of 53688869 is 96888635.

It is a happy number.

53688869 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 53688869 - 2²⁰ = 52640293 is a prime.

It is a super-2 number, since 2×53688869² = 5764989308998322, which contains 22 as substring.

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 53688869.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53688169) 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, 50657 + ... + 51705.

It is an arithmetic number, because the mean of its divisors is an integer number (3763200).

Almost surely, 2^53688869 is an apocalyptic number.

It is an amenable number.

53688869 is a deficient number, since it is larger than the sum of its proper divisors (6522331).

53688869 is a wasteful number, since it uses less digits than its factorization.

53688869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1220.

The product of its digits is 2488320, while the sum is 53.

The square root of 53688869 is about 7327.2688636353. The cubic root of 53688869 is about 377.2489894565.

The spelling of 53688869 in words is "fifty-three million, six hundred eighty-eight thousand, eight hundred sixty-nine".