45478 has 4 divisors (see below), whose sum is σ = 68220. Its totient is φ = 22738.

The previous prime is 45439. The next prime is 45481. The reversal of 45478 is 87454.

45478 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 is an alternating number because its digits alternate between even and odd.

It is a plaindrome in base 12.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11368 + ... + 11371.

It is an arithmetic number, because the mean of its divisors is an integer number (17055).

2⁴⁵⁴⁷⁸ is an apocalyptic number.

45478 is a deficient number, since it is larger than the sum of its proper divisors (22742).

45478 is a wasteful number, since it uses less digits than its factorization.

45478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22741.

The product of its digits is 4480, while the sum is 28.

The square root of 45478 is about 213.2557150465. The cubic root of 45478 is about 35.6944301060.

It can be divided in two parts, 4 and 5478, that multiplied together give a palindrome (21912).

The spelling of 45478 in words is "forty-five thousand, four hundred seventy-eight".