54204521 has 4 divisors (see below), whose sum is σ = 61948032. Its totient is φ = 46461012.

The previous prime is 54204499. The next prime is 54204569. The reversal of 54204521 is 12540245.

It is a happy number.

54204521 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, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12540245 = 5 ⋅2508049.

It is a cyclic number.

It is not a de Polignac number, because 54204521 - 2⁶ = 54204457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (54204581) 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, 3871745 + ... + 3871758.

It is an arithmetic number, because the mean of its divisors is an integer number (15487008).

Almost surely, 2^54204521 is an apocalyptic number.

It is an amenable number.

54204521 is a deficient number, since it is larger than the sum of its proper divisors (7743511).

54204521 is an equidigital number, since it uses as much as digits as its factorization.

54204521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7743510.

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 54204521 is about 7362.3719683265. The cubic root of 54204521 is about 378.4528995625.

Adding to 54204521 its reverse (12540245), we get a palindrome (66744766).

The spelling of 54204521 in words is "fifty-four million, two hundred four thousand, five hundred twenty-one".