54879979 has 16 divisors (see below), whose sum is σ = 69071616. Its totient is φ = 42357600.

The previous prime is 54879967. The next prime is 54879983. The reversal of 54879979 is 97997845.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 54879979 - 2¹⁷ = 54748907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (54879989) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4909 + ... + 11569.

It is an arithmetic number, because the mean of its divisors is an integer number (4316976).

Almost surely, 2^54879979 is an apocalyptic number.

54879979 is a deficient number, since it is larger than the sum of its proper divisors (14191637).

54879979 is a wasteful number, since it uses less digits than its factorization.

54879979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6786.

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

The square root of 54879979 is about 7408.1022536139. The cubic root of 54879979 is about 380.0184178515.

The spelling of 54879979 in words is "fifty-four million, eight hundred seventy-nine thousand, nine hundred seventy-nine".