53272809 has 20 divisors (see below), whose sum is σ = 79939860. Its totient is φ = 35354880.

The previous prime is 53272799. The next prime is 53272847. The reversal of 53272809 is 90827235.

It is a happy number.

53272809 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 46785600 + 6487209 = 6840^2 + 2547^2 .

It is not a de Polignac number, because 53272809 - 2⁵ = 53272777 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (53272889) 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 19 ways as a sum of consecutive naturals, for example, 18157 + ... + 20885.

It is an arithmetic number, because the mean of its divisors is an integer number (3996993).

Almost surely, 2^53272809 is an apocalyptic number.

It is an amenable number.

53272809 is a deficient number, since it is larger than the sum of its proper divisors (26667051).

53272809 is a wasteful number, since it uses less digits than its factorization.

53272809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2982 (or 2973 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 53272809 is about 7298.8224392706. The cubic root of 53272809 is about 376.2719687102.

The spelling of 53272809 in words is "fifty-three million, two hundred seventy-two thousand, eight hundred nine".