54639579 has 4 divisors (see below), whose sum is σ = 72852776. Its totient is φ = 36426384.

The previous prime is 54639569. The next prime is 54639583. The reversal of 54639579 is 97593645.

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

It is not a de Polignac number, because 54639579 - 2¹⁹ = 54115291 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (54639539) 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, 9106594 + ... + 9106599.

It is an arithmetic number, because the mean of its divisors is an integer number (18213194).

Almost surely, 2^54639579 is an apocalyptic number.

54639579 is a deficient number, since it is larger than the sum of its proper divisors (18213197).

54639579 is a wasteful number, since it uses less digits than its factorization.

54639579 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18213196.

The product of its digits is 1020600, while the sum is 48.

The square root of 54639579 is about 7391.8589678105. The cubic root of 54639579 is about 379.4627194618.

The spelling of 54639579 in words is "fifty-four million, six hundred thirty-nine thousand, five hundred seventy-nine".