5861581581 has 8 divisors (see below), whose sum is σ = 7818998560. Its totient is φ = 3905942832.

The previous prime is 5861581559. The next prime is 5861581603. The reversal of 5861581581 is 1851851685.

It is an interprime number because it is at equal distance from previous prime (5861581559) and next prime (5861581603).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 5861581581 - 2⁹ = 5861581069 is a prime.

It is a super-2 number, since 2×5861581581² = 68716277261436919122, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 5861581581.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5861581541) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 436846 + ... + 450063.

It is an arithmetic number, because the mean of its divisors is an integer number (977374820).

Almost surely, 2^5861581581 is an apocalyptic number.

It is an amenable number.

5861581581 is a deficient number, since it is larger than the sum of its proper divisors (1957416979).

5861581581 is a wasteful number, since it uses less digits than its factorization.

5861581581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 889115.

The product of its digits is 384000, while the sum is 48.

The square root of 5861581581 is about 76560.9664319880. The cubic root of 5861581581 is about 1803.0382413618.

The spelling of 5861581581 in words is "five billion, eight hundred sixty-one million, five hundred eighty-one thousand, five hundred eighty-one".