54784521 has 24 divisors (see below), whose sum is σ = 87197760. Its totient is φ = 32868000.

The previous prime is 54784511. The next prime is 54784549. The reversal of 54784521 is 12548745.

54784521 is a `hidden beast` number, since 54 + 7 + 84 + 521 = 666.

It is not a de Polignac number, because 54784521 - 2¹⁴ = 54768137 is a prime.

It is not an unprimeable number, because it can be changed into a prime (54784511) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7260 + ... + 12738.

It is an arithmetic number, because the mean of its divisors is an integer number (3633240).

Almost surely, 2^54784521 is an apocalyptic number.

It is an amenable number.

54784521 is a deficient number, since it is larger than the sum of its proper divisors (32413239).

54784521 is a wasteful number, since it uses less digits than its factorization.

54784521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5597 (or 5594 counting only the distinct ones).

The product of its digits is 44800, while the sum is 36.

The square root of 54784521 is about 7401.6566388884. The cubic root of 54784521 is about 379.7979558434.

It can be divided in two parts, 5478 and 4521, that added together give a palindrome (9999).

The spelling of 54784521 in words is "fifty-four million, seven hundred eighty-four thousand, five hundred twenty-one".