54139524 has 12 divisors (see below), whose sum is σ = 126325584. Its totient is φ = 18046504.

The previous prime is 54139517. The next prime is 54139529. The reversal of 54139524 is 42593145.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (54139529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2255802 + ... + 2255825.

It is an arithmetic number, because the mean of its divisors is an integer number (10527132).

Almost surely, 2^54139524 is an apocalyptic number.

It is an amenable number.

54139524 is an abundant number, since it is smaller than the sum of its proper divisors (72186060).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

54139524 is a wasteful number, since it uses less digits than its factorization.

54139524 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4511634 (or 4511632 counting only the distinct ones).

The product of its digits is 21600, while the sum is 33.

The square root of 54139524 is about 7357.9565097926. The cubic root of 54139524 is about 378.3015706007.

The spelling of 54139524 in words is "fifty-four million, one hundred thirty-nine thousand, five hundred twenty-four".