54528809 has 6 divisors (see below), whose sum is σ = 57925374. Its totient is φ = 51320960.

The previous prime is 54528797. The next prime is 54528833. The reversal of 54528809 is 90882545.

It can be written as a sum of positive squares in 3 ways, for example, as 27457600 + 27071209 = 5240^2 + 5203^2 .

It is not a de Polignac number, because 54528809 - 2¹² = 54524713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (54528889) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 94052 + ... + 94629.

It is an arithmetic number, because the mean of its divisors is an integer number (9654229).

Almost surely, 2^54528809 is an apocalyptic number.

It is an amenable number.

54528809 is a deficient number, since it is larger than the sum of its proper divisors (3396565).

54528809 is a wasteful number, since it uses less digits than its factorization.

54528809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188715 (or 188698 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 41.

The square root of 54528809 is about 7384.3624640181. The cubic root of 54528809 is about 379.2061196210.

The spelling of 54528809 in words is "fifty-four million, five hundred twenty-eight thousand, eight hundred nine".