53305239 has 8 divisors (see below), whose sum is σ = 76540912. Its totient is φ = 32803200.

The previous prime is 53305223. The next prime is 53305243. The reversal of 53305239 is 93250335.

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

It is not a de Polignac number, because 53305239 - 2⁴ = 53305223 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 (53305039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 683362 + ... + 683439.

It is an arithmetic number, because the mean of its divisors is an integer number (9567614).

Almost surely, 2^53305239 is an apocalyptic number.

53305239 is a deficient number, since it is larger than the sum of its proper divisors (23235673).

53305239 is a wasteful number, since it uses less digits than its factorization.

53305239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1366817.

The product of its (nonzero) digits is 12150, while the sum is 30.

The square root of 53305239 is about 7301.0436925141. The cubic root of 53305239 is about 376.3483054938.

The spelling of 53305239 in words is "fifty-three million, three hundred five thousand, two hundred thirty-nine".