53328909 has 16 divisors (see below), whose sum is σ = 72823104. Its totient is φ = 34704000.

The previous prime is 53328893. The next prime is 53328917. The reversal of 53328909 is 90982335.

It is not a de Polignac number, because 53328909 - 2⁴ = 53328893 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53328109) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20914 + ... + 23324.

It is an arithmetic number, because the mean of its divisors is an integer number (4551444).

Almost surely, 2^53328909 is an apocalyptic number.

It is an amenable number.

53328909 is a deficient number, since it is larger than the sum of its proper divisors (19494195).

53328909 is a wasteful number, since it uses less digits than its factorization.

53328909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2588.

The product of its (nonzero) digits is 58320, while the sum is 39.

The square root of 53328909 is about 7302.6645137237. The cubic root of 53328909 is about 376.4040026219.

It can be divided in two parts, 5332 and 8909, that added together give a palindrome (14241).

The spelling of 53328909 in words is "fifty-three million, three hundred twenty-eight thousand, nine hundred nine".