5781107581 has 4 divisors (see below), whose sum is σ = 5788931200. Its totient is φ = 5773283964.

The previous prime is 5781107473. The next prime is 5781107593. The reversal of 5781107581 is 1857011875.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 5781107581 - 2¹⁵ = 5781074813 is a prime.

It is a super-2 number, since 2×5781107581² = 66842409726191343122, 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 (5781107681) 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, 3910701 + ... + 3912178.

It is an arithmetic number, because the mean of its divisors is an integer number (1447232800).

Almost surely, 2^5781107581 is an apocalyptic number.

It is an amenable number.

5781107581 is a deficient number, since it is larger than the sum of its proper divisors (7823619).

5781107581 is an equidigital number, since it uses as much as digits as its factorization.

5781107581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7823618.

The product of its (nonzero) digits is 78400, while the sum is 43.

The square root of 5781107581 is about 76033.5950813849. The cubic root of 5781107581 is about 1794.7488501124.

The spelling of 5781107581 in words is "five billion, seven hundred eighty-one million, one hundred seven thousand, five hundred eighty-one".