54215140 has 96 divisors (see below), whose sum is σ = 137894400. Its totient is φ = 17504256.

The previous prime is 54215137. The next prime is 54215141. The reversal of 54215140 is 4151245.

54215140 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (54215141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 363786 + ... + 363934.

It is an arithmetic number, because the mean of its divisors is an integer number (1436400).

Almost surely, 2^54215140 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 54215140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68947200).

54215140 is an abundant number, since it is smaller than the sum of its proper divisors (83679260).

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

54215140 is a wasteful number, since it uses less digits than its factorization.

54215140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 301 (or 299 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 54215140 is about 7363.0931000497. The cubic root of 54215140 is about 378.4776117013.

Adding to 54215140 its reverse (4151245), we get a palindrome (58366385).

The spelling of 54215140 in words is "fifty-four million, two hundred fifteen thousand, one hundred forty".