54004521 has 4 divisors (see below), whose sum is σ = 72006032. Its totient is φ = 36003012.

The previous prime is 54004519. The next prime is 54004537. The reversal of 54004521 is 12540045.

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 not a de Polignac number, because 54004521 - 2¹ = 54004519 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (54004021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9000751 + ... + 9000756.

It is an arithmetic number, because the mean of its divisors is an integer number (18001508).

Almost surely, 2^54004521 is an apocalyptic number.

It is an amenable number.

54004521 is a deficient number, since it is larger than the sum of its proper divisors (18001511).

54004521 is a wasteful number, since it uses less digits than its factorization.

54004521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18001510.

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 54004521 is about 7348.7768369981. The cubic root of 54004521 is about 377.9868630131.

Adding to 54004521 its reverse (12540045), we get a palindrome (66544566).

The spelling of 54004521 in words is "fifty-four million, four thousand, five hundred twenty-one".