5578561 has 4 divisors (see below), whose sum is σ = 5591124. Its totient is φ = 5566000.

The previous prime is 5578553. The next prime is 5578577. The reversal of 5578561 is 1658755.

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

It can be written as a sum of positive squares in 2 ways, for example, as 4326400 + 1252161 = 2080^2 + 1119^2 .

It is a cyclic number.

It is not a de Polignac number, because 5578561 - 2³ = 5578553 is a prime.

It is a super-2 number, since 2×5578561² = 62240685661442, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 5578561.

It is not an unprimeable number, because it can be changed into a prime (5578861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5590 + ... + 6511.

It is an arithmetic number, because the mean of its divisors is an integer number (1397781).

Almost surely, 2^5578561 is an apocalyptic number.

It is an amenable number.

5578561 is a deficient number, since it is larger than the sum of its proper divisors (12563).

5578561 is a wasteful number, since it uses less digits than its factorization.

5578561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12562.

The product of its digits is 42000, while the sum is 37.

The square root of 5578561 is about 2361.8977539259. The cubic root of 5578561 is about 177.3538941838.

The spelling of 5578561 in words is "five million, five hundred seventy-eight thousand, five hundred sixty-one".