45518 has 8 divisors (see below), whose sum is σ = 74520. Its totient is φ = 20680.

The previous prime is 45503. The next prime is 45523. The reversal of 45518 is 81554.

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

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 45493 and 45502.

It is a congruent number.

It is an unprimeable number.

45518 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1013 + ... + 1056.

It is an arithmetic number, because the mean of its divisors is an integer number (9315).

2⁴⁵⁵¹⁸ is an apocalyptic number.

45518 is a deficient number, since it is larger than the sum of its proper divisors (29002).

45518 is a wasteful number, since it uses less digits than its factorization.

45518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2082.

The product of its digits is 800, while the sum is 23.

The square root of 45518 is about 213.3494785557. The cubic root of 45518 is about 35.7048920056.

The spelling of 45518 in words is "forty-five thousand, five hundred eighteen".