53518 has 4 divisors (see below), whose sum is σ = 80280. Its totient is φ = 26758.

The previous prime is 53507. The next prime is 53527. The reversal of 53518 is 81535.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13378 + ... + 13381.

It is an arithmetic number, because the mean of its divisors is an integer number (20070).

2⁵³⁵¹⁸ is an apocalyptic number.

53518 is a deficient number, since it is larger than the sum of its proper divisors (26762).

53518 is a wasteful number, since it uses less digits than its factorization.

53518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26761.

The product of its digits is 600, while the sum is 22.

The square root of 53518 is about 231.3395772452. The cubic root of 53518 is about 37.6848356059.

The spelling of 53518 in words is "fifty-three thousand, five hundred eighteen".