54879779 has 4 divisors (see below), whose sum is σ = 55067376. Its totient is φ = 54692184.

The previous prime is 54879763. The next prime is 54879793. The reversal of 54879779 is 97797845.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 54879779 - 2⁴ = 54879763 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (54879079) 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, 93359 + ... + 93944.

It is an arithmetic number, because the mean of its divisors is an integer number (13766844).

Almost surely, 2^54879779 is an apocalyptic number.

54879779 is a deficient number, since it is larger than the sum of its proper divisors (187597).

54879779 is a wasteful number, since it uses less digits than its factorization.

54879779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187596.

The product of its digits is 4445280, while the sum is 56.

The square root of 54879779 is about 7408.0887548679. The cubic root of 54879779 is about 380.0179562152.

It can be divided in two parts, 5 and 4879779, that added together give a palindrome (4879784).

The spelling of 54879779 in words is "fifty-four million, eight hundred seventy-nine thousand, seven hundred seventy-nine".