5578391 has 16 divisors (see below), whose sum is σ = 6988800. Its totient is φ = 4334688.

The previous prime is 5578387. The next prime is 5578421. The reversal of 5578391 is 1938755.

It is a cyclic number.

It is not a de Polignac number, because 5578391 - 2² = 5578387 is a prime.

It is a super-2 number, since 2×5578391² = 62236892297762, which contains 22 as substring.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5578291) 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 15 ways as a sum of consecutive naturals, for example, 4850 + ... + 5888.

It is an arithmetic number, because the mean of its divisors is an integer number (436800).

Almost surely, 2^5578391 is an apocalyptic number.

5578391 is a deficient number, since it is larger than the sum of its proper divisors (1410409).

5578391 is a wasteful number, since it uses less digits than its factorization.

5578391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1118.

The product of its digits is 37800, while the sum is 38.

The square root of 5578391 is about 2361.8617656417. The cubic root of 5578391 is about 177.3520926160.

The spelling of 5578391 in words is "five million, five hundred seventy-eight thousand, three hundred ninety-one".