54129879 has 24 divisors (see below), whose sum is σ = 85887360. Its totient is φ = 32698512.

The previous prime is 54129869. The next prime is 54129893. The reversal of 54129879 is 97892145.

54129879 is a `hidden beast` number, since 541 + 29 + 87 + 9 = 666.

It is not a de Polignac number, because 54129879 - 2⁵ = 54129847 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54129869) 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 23 ways as a sum of consecutive naturals, for example, 2949 + ... + 10814.

It is an arithmetic number, because the mean of its divisors is an integer number (3578640).

Almost surely, 2^54129879 is an apocalyptic number.

54129879 is the 3933-rd nonagonal number.

54129879 is a deficient number, since it is larger than the sum of its proper divisors (31757481).

54129879 is a wasteful number, since it uses less digits than its factorization.

54129879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13811 (or 13808 counting only the distinct ones).

The product of its digits is 181440, while the sum is 45.

The square root of 54129879 is about 7357.3010676470. The cubic root of 54129879 is about 378.2791043563.

The spelling of 54129879 in words is "fifty-four million, one hundred twenty-nine thousand, eight hundred seventy-nine".