54111220 has 12 divisors (see below), whose sum is σ = 113633604. Its totient is φ = 21644480.

The previous prime is 54111181. The next prime is 54111223. The reversal of 54111220 is 2211145.

It can be written as a sum of positive squares in 2 ways, for example, as 19324816 + 34786404 = 4396^2 + 5898^2 .

It is a junction number, because it is equal to n+sod(n) for n = 54111194 and 54111203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54111223) 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, 1352761 + ... + 1352800.

It is an arithmetic number, because the mean of its divisors is an integer number (9469467).

Almost surely, 2^54111220 is an apocalyptic number.

It is an amenable number.

54111220 is an abundant number, since it is smaller than the sum of its proper divisors (59522384).

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

54111220 is a wasteful number, since it uses less digits than its factorization.

54111220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2705570 (or 2705568 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 54111220 is about 7356.0328982407. The cubic root of 54111220 is about 378.2356340886.

Adding to 54111220 its reverse (2211145), we get a palindrome (56322365).

The spelling of 54111220 in words is "fifty-four million, one hundred eleven thousand, two hundred twenty".