53278273 has 4 divisors (see below), whose sum is σ = 53293140. Its totient is φ = 53263408.

The previous prime is 53278271. The next prime is 53278319. The reversal of 53278273 is 37287235.

53278273 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, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 52243984 + 1034289 = 7228^2 + 1017^2 .

It is a cyclic number.

It is not a de Polignac number, because 53278273 - 2¹ = 53278271 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53278271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1611 + ... + 10447.

It is an arithmetic number, because the mean of its divisors is an integer number (13323285).

Almost surely, 2^53278273 is an apocalyptic number.

It is an amenable number.

53278273 is a deficient number, since it is larger than the sum of its proper divisors (14867).

53278273 is an equidigital number, since it uses as much as digits as its factorization.

53278273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14866.

The product of its digits is 70560, while the sum is 37.

The square root of 53278273 is about 7299.1967366279. The cubic root of 53278273 is about 376.2848325570.

The spelling of 53278273 in words is "fifty-three million, two hundred seventy-eight thousand, two hundred seventy-three".