5787581 has 4 divisors (see below), whose sum is σ = 5852700. Its totient is φ = 5722464.

The previous prime is 5787563. The next prime is 5787631. The reversal of 5787581 is 1857875.

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 4120900 + 1666681 = 2030^2 + 1291^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5787581 is a prime.

It is a super-2 number, since 2×5787581² = 66992187663122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5787511) 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, 32426 + ... + 32603.

It is an arithmetic number, because the mean of its divisors is an integer number (1463175).

Almost surely, 2^5787581 is an apocalyptic number.

It is an amenable number.

5787581 is a deficient number, since it is larger than the sum of its proper divisors (65119).

5787581 is an equidigital number, since it uses as much as digits as its factorization.

5787581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65118.

The product of its digits is 78400, while the sum is 41.

The square root of 5787581 is about 2405.7391795454. The cubic root of 5787581 is about 179.5418492699.

The spelling of 5787581 in words is "five million, seven hundred eighty-seven thousand, five hundred eighty-one".