57278 has 8 divisors (see below), whose sum is σ = 92568. Its totient is φ = 26424.

The previous prime is 57271. The next prime is 57283. The reversal of 57278 is 87275.

57278 is nontrivially palindromic in base 12.

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

It is a self number, because there is not a number n which added to its sum of digits gives 57278.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57271) 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, 1076 + ... + 1127.

It is an arithmetic number, because the mean of its divisors is an integer number (11571).

2⁵⁷²⁷⁸ is an apocalyptic number.

57278 is a deficient number, since it is larger than the sum of its proper divisors (35290).

57278 is a wasteful number, since it uses less digits than its factorization.

57278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2218.

The product of its digits is 3920, while the sum is 29.

The square root of 57278 is about 239.3282265008. The cubic root of 57278 is about 38.5474761472.

The spelling of 57278 in words is "fifty-seven thousand, two hundred seventy-eight".