53239523 has 4 divisors (see below), whose sum is σ = 53472240. Its totient is φ = 53006808.

The previous prime is 53239513. The next prime is 53239541. The reversal of 53239523 is 32593235.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32593235 = 5 ⋅6518647.

It is a cyclic number.

It is not a de Polignac number, because 53239523 - 2¹⁰ = 53238499 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 53239523.

It is not an unprimeable number, because it can be changed into a prime (53239513) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 116015 + ... + 116472.

It is an arithmetic number, because the mean of its divisors is an integer number (13368060).

Almost surely, 2^53239523 is an apocalyptic number.

53239523 is a deficient number, since it is larger than the sum of its proper divisors (232717).

53239523 is a wasteful number, since it uses less digits than its factorization.

53239523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232716.

The product of its digits is 24300, while the sum is 32.

The square root of 53239523 is about 7296.5418521379. The cubic root of 53239523 is about 376.1935847689.

The spelling of 53239523 in words is "fifty-three million, two hundred thirty-nine thousand, five hundred twenty-three".