54138784 has 24 divisors (see below), whose sum is σ = 121812768. Its totient is φ = 23202240.

The previous prime is 54138731. The next prime is 54138787. The reversal of 54138784 is 48783145.

It is a Smith number, since the sum of its digits (40) 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 (54138787) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 120622 + ... + 121069.

It is an arithmetic number, because the mean of its divisors is an integer number (5075532).

Almost surely, 2^54138784 is an apocalyptic number.

It is an amenable number.

54138784 is an abundant number, since it is smaller than the sum of its proper divisors (67673984).

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

54138784 is a wasteful number, since it uses less digits than its factorization.

54138784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241708 (or 241700 counting only the distinct ones).

The product of its digits is 107520, while the sum is 40.

The square root of 54138784 is about 7357.9062239200. The cubic root of 54138784 is about 378.2998470020.

The spelling of 54138784 in words is "fifty-four million, one hundred thirty-eight thousand, seven hundred eighty-four".