45418 has 4 divisors (see below), whose sum is σ = 68130. Its totient is φ = 22708.

The previous prime is 45413. The next prime is 45427. The reversal of 45418 is 81454.

45418 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 can be written as a sum of positive squares in only one way, i.e., 45369 + 49 = 213^2 + 7^2 .

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an alternating number because its digits alternate between even and odd.

It is a plaindrome in base 12 and base 13.

It is not an unprimeable number, because it can be changed into a prime (45413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11353 + ... + 11356.

2⁴⁵⁴¹⁸ is an apocalyptic number.

45418 is a deficient number, since it is larger than the sum of its proper divisors (22712).

45418 is a wasteful number, since it uses less digits than its factorization.

45418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22711.

The product of its digits is 640, while the sum is 22.

The square root of 45418 is about 213.1149924337. The cubic root of 45418 is about 35.6787257483.

The spelling of 45418 in words is "forty-five thousand, four hundred eighteen".