54688649 has 6 divisors (see below), whose sum is σ = 54967950. Its totient is φ = 54410496.

The previous prime is 54688603. The next prime is 54688657. The reversal of 54688649 is 94688645.

It is a happy number.

54688649 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 3 ways, for example, as 22278400 + 32410249 = 4720^2 + 5693^2 .

It is not a de Polignac number, because 54688649 - 2⁸ = 54688393 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 54688597 and 54688606.

It is not an unprimeable number, because it can be changed into a prime (54688349) 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 5 ways as a sum of consecutive naturals, for example, 121577 + ... + 122025.

It is an arithmetic number, because the mean of its divisors is an integer number (9161325).

Almost surely, 2^54688649 is an apocalyptic number.

It is an amenable number.

54688649 is a deficient number, since it is larger than the sum of its proper divisors (279301).

54688649 is an frugal number, since it uses more digits than its factorization.

54688649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1147 (or 798 counting only the distinct ones).

The product of its digits is 1658880, while the sum is 50.

The square root of 54688649 is about 7395.1774150456. The cubic root of 54688649 is about 379.5762797826.

The spelling of 54688649 in words is "fifty-four million, six hundred eighty-eight thousand, six hundred forty-nine".