4505278 has 4 divisors (see below), whose sum is σ = 6757920. Its totient is φ = 2252638.

The previous prime is 4505257. The next prime is 4505287. The reversal of 4505278 is 8725054.

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

It is a Smith number, since the sum of its digits (31) 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 congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1126318 + ... + 1126321.

It is an arithmetic number, because the mean of its divisors is an integer number (1689480).

Almost surely, 2^4505278 is an apocalyptic number.

4505278 is a deficient number, since it is larger than the sum of its proper divisors (2252642).

4505278 is a wasteful number, since it uses less digits than its factorization.

4505278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2252641.

The product of its (nonzero) digits is 11200, while the sum is 31.

The square root of 4505278 is about 2122.5640155246. The cubic root of 4505278 is about 165.1608837889.

The spelling of 4505278 in words is "four million, five hundred five thousand, two hundred seventy-eight".