53143523 has 4 divisors (see below), whose sum is σ = 53161248. Its totient is φ = 53125800.

The previous prime is 53143499. The next prime is 53143543. The reversal of 53143523 is 32534135.

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 53143523 - 2¹⁶ = 53077987 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 53143492 and 53143501.

It is not an unprimeable number, because it can be changed into a prime (53143543) 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, 3128 + ... + 10773.

It is an arithmetic number, because the mean of its divisors is an integer number (13290312).

Almost surely, 2^53143523 is an apocalyptic number.

53143523 is a deficient number, since it is larger than the sum of its proper divisors (17725).

53143523 is a wasteful number, since it uses less digits than its factorization.

53143523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17724.

The product of its digits is 5400, while the sum is 26.

The square root of 53143523 is about 7289.9604251326. The cubic root of 53143523 is about 375.9673348528.

Adding to 53143523 its reverse (32534135), we get a palindrome (85677658).

The spelling of 53143523 in words is "fifty-three million, one hundred forty-three thousand, five hundred twenty-three".