54643220 has 12 divisors (see below), whose sum is σ = 114750804. Its totient is φ = 21857280.

The previous prime is 54643207. The next prime is 54643229. The reversal of 54643220 is 2234645.

It can be written as a sum of positive squares in 2 ways, for example, as 27415696 + 27227524 = 5236^2 + 5218^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 54643220.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54643229) 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, 1366061 + ... + 1366100.

It is an arithmetic number, because the mean of its divisors is an integer number (9562567).

Almost surely, 2^54643220 is an apocalyptic number.

It is an amenable number.

54643220 is an abundant number, since it is smaller than the sum of its proper divisors (60107584).

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

54643220 is a wasteful number, since it uses less digits than its factorization.

54643220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2732170 (or 2732168 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 26.

The square root of 54643220 is about 7392.1052481685. The cubic root of 54643220 is about 379.4711479862.

Adding to 54643220 its reverse (2234645), we get a palindrome (56877865).

The spelling of 54643220 in words is "fifty-four million, six hundred forty-three thousand, two hundred twenty".