54139129 has 8 divisors (see below), whose sum is σ = 60175872. Its totient is φ = 48288240.

The previous prime is 54139117. The next prime is 54139153. The reversal of 54139129 is 92193145.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 54139129 - 2²³ = 45750521 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 54139094 and 54139103.

It is not an unprimeable number, because it can be changed into a prime (54139109) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45849 + ... + 47014.

It is an arithmetic number, because the mean of its divisors is an integer number (7521984).

Almost surely, 2^54139129 is an apocalyptic number.

It is an amenable number.

54139129 is a deficient number, since it is larger than the sum of its proper divisors (6036743).

54139129 is a wasteful number, since it uses less digits than its factorization.

54139129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92927.

The product of its digits is 9720, while the sum is 34.

The square root of 54139129 is about 7357.9296680520. The cubic root of 54139129 is about 378.3006505736.

The spelling of 54139129 in words is "fifty-four million, one hundred thirty-nine thousand, one hundred twenty-nine".