54528640 has 32 divisors (see below), whose sum is σ = 130359060. Its totient is φ = 21811200.

The previous prime is 54528637. The next prime is 54528641. The reversal of 54528640 is 4682545.

It can be written as a sum of positive squares in 2 ways, for example, as 54523456 + 5184 = 7384^2 + 72^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is a junction number, because it is equal to n+sod(n) for n = 54528596 and 54528605.

It is not an unprimeable number, because it can be changed into a prime (54528641) 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, 41961 + ... + 43240.

Almost surely, 2^54528640 is an apocalyptic number.

It is an amenable number.

54528640 is an abundant number, since it is smaller than the sum of its proper divisors (75830420).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

54528640 is an equidigital number, since it uses as much as digits as its factorization.

54528640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85220 (or 85208 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 34.

The square root of 54528640 is about 7384.3510209090. The cubic root of 54528640 is about 379.2057278654.

The spelling of 54528640 in words is "fifty-four million, five hundred twenty-eight thousand, six hundred forty".