54220320 has 384 divisors, whose sum is σ = 238049280. Its totient is φ = 11197440.

The previous prime is 54220303. The next prime is 54220321. The reversal of 54220320 is 2302245.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 54220293 and 54220302.

It is not an unprimeable number, because it can be changed into a prime (54220321) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 332559 + ... + 332721.

It is an arithmetic number, because the mean of its divisors is an integer number (619920).

Almost surely, 2^54220320 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 54220320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (119024640).

54220320 is an abundant number, since it is smaller than the sum of its proper divisors (183828960).

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

54220320 is a wasteful number, since it uses less digits than its factorization.

54220320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205 (or 191 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 18.

The square root of 54220320 is about 7363.4448459943. Note that the first 3 decimals coincide. The cubic root of 54220320 is about 378.4896652322.

Adding to 54220320 its reverse (2302245), we get a palindrome (56522565).

The spelling of 54220320 in words is "fifty-four million, two hundred twenty thousand, three hundred twenty".