5578 has 4 divisors (see below), whose sum is σ = 8370. Its totient is φ = 2788.

The previous prime is 5573. The next prime is 5581. The reversal of 5578 is 8755.

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., 4489 + 1089 = 67^2 + 33^2 .

It is a super-2 number, since 2×5578² = 62228168, which contains 22 as substring.

It is a plaindrome in base 10 and base 15.

It is a nialpdrome in base 11.

It is not an unprimeable number, because it can be changed into a prime (5573) by changing a digit.

5578 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1393 + ... + 1396.

2⁵⁵⁷⁸ is an apocalyptic number.

5578 is a deficient number, since it is larger than the sum of its proper divisors (2792).

5578 is a wasteful number, since it uses less digits than its factorization.

5578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2791.

The product of its digits is 1400, while the sum is 25.

The square root of 5578 is about 74.6860093994. The cubic root of 5578 is about 17.7347948871.

It can be divided in two parts, 557 and 8, that added together give a palindrome (565).

The spelling of 5578 in words is "five thousand, five hundred seventy-eight".