54008821 has 4 divisors (see below), whose sum is σ = 54156352. Its totient is φ = 53861292.

The previous prime is 54008819. The next prime is 54008833. The reversal of 54008821 is 12880045.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 54008821 - 2¹ = 54008819 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 54008821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54008021) 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, 73215 + ... + 73948.

It is an arithmetic number, because the mean of its divisors is an integer number (13539088).

Almost surely, 2^54008821 is an apocalyptic number.

It is an amenable number.

54008821 is a deficient number, since it is larger than the sum of its proper divisors (147531).

54008821 is a wasteful number, since it uses less digits than its factorization.

54008821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147530.

The product of its (nonzero) digits is 2560, while the sum is 28.

The square root of 54008821 is about 7349.0693968692. The cubic root of 54008821 is about 377.9968948916.

Adding to 54008821 its reverse (12880045), we get a palindrome (66888866).

The spelling of 54008821 in words is "fifty-four million, eight thousand, eight hundred twenty-one".