54688889 has 4 divisors (see below), whose sum is σ = 54703860. Its totient is φ = 54673920.

The previous prime is 54688883. The next prime is 54688919. The reversal of 54688889 is 98888645.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 18207289 + 36481600 = 4267^2 + 6040^2 .

It is a cyclic number.

It is not a de Polignac number, because 54688889 - 2⁴ = 54688873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (54688883) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2009 + ... + 10649.

It is an arithmetic number, because the mean of its divisors is an integer number (13675965).

Almost surely, 2^54688889 is an apocalyptic number.

It is an amenable number.

54688889 is a deficient number, since it is larger than the sum of its proper divisors (14971).

54688889 is an equidigital number, since it uses as much as digits as its factorization.

54688889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14970.

The product of its digits is 4423680, while the sum is 56.

The square root of 54688889 is about 7395.1936418190. The cubic root of 54688889 is about 379.5768350360.

The spelling of 54688889 in words is "fifty-four million, six hundred eighty-eight thousand, eight hundred eighty-nine".