54139392 has 120 divisors (see below), whose sum is σ = 161715840. Its totient is φ = 17418240.

The previous prime is 54139381. The next prime is 54139439. The reversal of 54139392 is 29393145.

It is a happy number.

It is a super-2 number, since 2×54139392² = 5862147532259328, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 142659 + ... + 143037.

It is an arithmetic number, because the mean of its divisors is an integer number (1347632).

Almost surely, 2^54139392 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 54139392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80857920).

54139392 is an abundant number, since it is smaller than the sum of its proper divisors (107576448).

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

54139392 is a wasteful number, since it uses less digits than its factorization.

54139392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 434 (or 415 counting only the distinct ones).

The product of its digits is 29160, while the sum is 36.

The square root of 54139392 is about 7357.9475399054. The cubic root of 54139392 is about 378.3012631491.

The spelling of 54139392 in words is "fifty-four million, one hundred thirty-nine thousand, three hundred ninety-two".