54203021 has 4 divisors (see below), whose sum is σ = 57391452. Its totient is φ = 51014592.

The previous prime is 54203003. The next prime is 54203081. The reversal of 54203021 is 12030245.

54203021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 23522500 + 30680521 = 4850^2 + 5539^2 .

It is a cyclic number.

It is not a de Polignac number, because 54203021 - 2⁶ = 54202957 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17), and also a Moran number because the ratio is a prime number: 3188413 = 54203021 / (5 + 4 + 2 + 0 + 3 + 0 + 2 + 1).

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54203081) 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 3 ways as a sum of consecutive naturals, for example, 1594190 + ... + 1594223.

It is an arithmetic number, because the mean of its divisors is an integer number (14347863).

Almost surely, 2^54203021 is an apocalyptic number.

It is an amenable number.

54203021 is a deficient number, since it is larger than the sum of its proper divisors (3188431).

54203021 is a wasteful number, since it uses less digits than its factorization.

54203021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3188430.

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 54203021 is about 7362.2700982781. The cubic root of 54203021 is about 378.4494085586.

Adding to 54203021 its reverse (12030245), we get a palindrome (66233266).

The spelling of 54203021 in words is "fifty-four million, two hundred three thousand, twenty-one".