54889779 has 32 divisors (see below), whose sum is σ = 87160320. Its totient is φ = 30062592.

The previous prime is 54889777. The next prime is 54889789. The reversal of 54889779 is 97798845.

54889779 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 54889779 - 2¹ = 54889777 is a prime.

It is not an unprimeable number, because it can be changed into a prime (54889777) 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 31 ways as a sum of consecutive naturals, for example, 117304 + ... + 117770.

It is an arithmetic number, because the mean of its divisors is an integer number (2723760).

Almost surely, 2^54889779 is an apocalyptic number.

54889779 is a deficient number, since it is larger than the sum of its proper divisors (32270541).

54889779 is a wasteful number, since it uses less digits than its factorization.

54889779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 699.

The product of its digits is 5080320, while the sum is 57.

The square root of 54889779 is about 7408.7636620424. The cubic root of 54889779 is about 380.0410366578.

The spelling of 54889779 in words is "fifty-four million, eight hundred eighty-nine thousand, seven hundred seventy-nine".