54008139 has 8 divisors (see below), whose sum is σ = 72055872. Its totient is φ = 35982920.

The previous prime is 54008131. The next prime is 54008159. The reversal of 54008139 is 93180045.

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

It is a cyclic number.

It is not a de Polignac number, because 54008139 - 2³ = 54008131 is a prime.

It is not an unprimeable number, because it can be changed into a prime (54008131) 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, 1132 + ... + 10454.

It is an arithmetic number, because the mean of its divisors is an integer number (9006984).

Almost surely, 2^54008139 is an apocalyptic number.

54008139 is a deficient number, since it is larger than the sum of its proper divisors (18047733).

54008139 is a wasteful number, since it uses less digits than its factorization.

54008139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11257.

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 54008139 is about 7349.0229962901. The cubic root of 54008139 is about 377.9953038245.

The spelling of 54008139 in words is "fifty-four million, eight thousand, one hundred thirty-nine".