54481218 has 48 divisors (see below), whose sum is σ = 121117248. Its totient is φ = 16324000.

The previous prime is 54481213. The next prime is 54481223. The reversal of 54481218 is 81218445.

54481218 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (54481213) and next prime (54481223).

It is a super-2 number, since 2×54481218² = 5936406229527048, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (54481213) 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 23 ways as a sum of consecutive naturals, for example, 72955 + ... + 73697.

It is an arithmetic number, because the mean of its divisors is an integer number (2523276).

Almost surely, 2^54481218 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 54481218, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60558624).

54481218 is an abundant number, since it is smaller than the sum of its proper divisors (66636030).

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

54481218 is a wasteful number, since it uses less digits than its factorization.

54481218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 871 (or 860 counting only the distinct ones).

The product of its digits is 10240, while the sum is 33.

The square root of 54481218 is about 7381.1393429470. The cubic root of 54481218 is about 379.0957678545.

It can be divided in two parts, 5448 and 1218, that added together give a palindrome (6666).

The spelling of 54481218 in words is "fifty-four million, four hundred eighty-one thousand, two hundred eighteen".