54779899 has 16 divisors (see below), whose sum is σ = 59618592. Its totient is φ = 50139648.

The previous prime is 54779873. The next prime is 54779903. The reversal of 54779899 is 99897745.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 54779899 - 2⁷ = 54779771 is a prime.

It is not an unprimeable number, because it can be changed into a prime (54779839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 146677 + ... + 147049.

It is an arithmetic number, because the mean of its divisors is an integer number (3726162).

Almost surely, 2^54779899 is an apocalyptic number.

54779899 is a deficient number, since it is larger than the sum of its proper divisors (4838693).

54779899 is a wasteful number, since it uses less digits than its factorization.

54779899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 606.

The product of its digits is 5715360, while the sum is 58.

The square root of 54779899 is about 7401.3444049037. The cubic root of 54779899 is about 379.7872747514.

It can be divided in two parts, 5477 and 9899, that added together give a square (15376 = 124²).

The spelling of 54779899 in words is "fifty-four million, seven hundred seventy-nine thousand, eight hundred ninety-nine".