54686689 has 4 divisors (see below), whose sum is σ = 55170756. Its totient is φ = 54202624.

The previous prime is 54686659. The next prime is 54686699. The reversal of 54686689 is 98668645.

54686689 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 can be written as a sum of positive squares in 2 ways, for example, as 22877089 + 31809600 = 4783^2 + 5640^2 .

It is a cyclic number.

It is not a de Polignac number, because 54686689 - 2¹³ = 54678497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (54686659) 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, 241864 + ... + 242089.

It is an arithmetic number, because the mean of its divisors is an integer number (13792689).

Almost surely, 2^54686689 is an apocalyptic number.

It is an amenable number.

54686689 is a deficient number, since it is larger than the sum of its proper divisors (484067).

54686689 is a wasteful number, since it uses less digits than its factorization.

54686689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 484066.

The product of its digits is 2488320, while the sum is 52.

The square root of 54686689 is about 7395.0448950632. The cubic root of 54686689 is about 379.5717451524.

The spelling of 54686689 in words is "fifty-four million, six hundred eighty-six thousand, six hundred eighty-nine".