54506779 has 4 divisors (see below), whose sum is σ = 54597184. Its totient is φ = 54416376.

The previous prime is 54506741. The next prime is 54506783. The reversal of 54506779 is 97760545.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 97760545 = 5 ⋅19552109.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-54506779 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (54506719) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44292 + ... + 45505.

It is an arithmetic number, because the mean of its divisors is an integer number (13649296).

Almost surely, 2^54506779 is an apocalyptic number.

54506779 is a deficient number, since it is larger than the sum of its proper divisors (90405).

54506779 is an equidigital number, since it uses as much as digits as its factorization.

54506779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90404.

The product of its (nonzero) digits is 264600, while the sum is 43.

The square root of 54506779 is about 7382.8706476546. The cubic root of 54506779 is about 379.1550454810.

The spelling of 54506779 in words is "fifty-four million, five hundred six thousand, seven hundred seventy-nine".