5578591 has 4 divisors (see below), whose sum is σ = 5585112. Its totient is φ = 5572072.

The previous prime is 5578589. The next prime is 5578613. The reversal of 5578591 is 1958755.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1958755 = 5 ⋅391751.

It is a cyclic number.

It is not a de Polignac number, because 5578591 - 2¹ = 5578589 is a prime.

It is a super-2 number, since 2×5578591² = 62241355090562, which contains 22 as substring.

It is a Duffinian number.

5578591 is a lucky 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 polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1741 + ... + 3766.

It is an arithmetic number, because the mean of its divisors is an integer number (1396278).

Almost surely, 2^5578591 is an apocalyptic number.

5578591 is a deficient number, since it is larger than the sum of its proper divisors (6521).

5578591 is a wasteful number, since it uses less digits than its factorization.

5578591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6520.

The product of its digits is 63000, while the sum is 40.

The square root of 5578591 is about 2361.9041047426. The cubic root of 5578591 is about 177.3542121038.

The spelling of 5578591 in words is "five million, five hundred seventy-eight thousand, five hundred ninety-one".