54205521 has 8 divisors (see below), whose sum is σ = 72334944. Its totient is φ = 36106560.

The previous prime is 54205519. The next prime is 54205531. The reversal of 54205521 is 12550245.

It is a happy number.

54205521 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 54205521 - 2¹ = 54205519 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 54205491 and 54205500.

It is not an unprimeable number, because it can be changed into a prime (54205531) 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 7 ways as a sum of consecutive naturals, for example, 3075 + ... + 10856.

It is an arithmetic number, because the mean of its divisors is an integer number (9041868).

Almost surely, 2^54205521 is an apocalyptic number.

It is an amenable number.

54205521 is a deficient number, since it is larger than the sum of its proper divisors (18129423).

54205521 is a wasteful number, since it uses less digits than its factorization.

54205521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15231.

The product of its (nonzero) digits is 2000, while the sum is 24.

The square root of 54205521 is about 7362.4398809090. The cubic root of 54205521 is about 378.4552268627.

Adding to 54205521 its reverse (12550245), we get a palindrome (66755766).

The spelling of 54205521 in words is "fifty-four million, two hundred five thousand, five hundred twenty-one".