53239871 has 4 divisors (see below), whose sum is σ = 55554672. Its totient is φ = 50925072.

The previous prime is 53239867. The next prime is 53239877. The reversal of 53239871 is 17893235.

53239871 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 53239871 - 2² = 53239867 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 (53239877) 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 3 ways as a sum of consecutive naturals, for example, 1157366 + ... + 1157411.

It is an arithmetic number, because the mean of its divisors is an integer number (13888668).

Almost surely, 2^53239871 is an apocalyptic number.

53239871 is a deficient number, since it is larger than the sum of its proper divisors (2314801).

53239871 is a wasteful number, since it uses less digits than its factorization.

53239871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2314800.

The product of its digits is 45360, while the sum is 38.

The square root of 53239871 is about 7296.5656990121. The cubic root of 53239871 is about 376.1944044299.

The spelling of 53239871 in words is "fifty-three million, two hundred thirty-nine thousand, eight hundred seventy-one".