53238909 has 8 divisors (see below), whose sum is σ = 72149152. Its totient is φ = 34910640.

The previous prime is 53238907. The next prime is 53238919. The reversal of 53238909 is 90983235.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 53238909 - 2¹ = 53238907 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53238901) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 145279 + ... + 145644.

It is an arithmetic number, because the mean of its divisors is an integer number (9018644).

Almost surely, 2^53238909 is an apocalyptic number.

It is an amenable number.

53238909 is a deficient number, since it is larger than the sum of its proper divisors (18910243).

53238909 is a wasteful number, since it uses less digits than its factorization.

53238909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290987.

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

The square root of 53238909 is about 7296.4997772905. The cubic root of 53238909 is about 376.1921385767.

The spelling of 53238909 in words is "fifty-three million, two hundred thirty-eight thousand, nine hundred nine".