5791581 has 20 divisors (see below), whose sum is σ = 8735232. Its totient is φ = 3823848.

The previous prime is 5791567. The next prime is 5791609. The reversal of 5791581 is 1851975.

5791581 is a `hidden beast` number, since 5 + 79 + 1 + 581 = 666.

It is not a de Polignac number, because 5791581 - 2⁵ = 5791549 is a prime.

It is a super-2 number, since 2×5791581² = 67084820959122, which contains 22 as substring.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5791531) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 10006 + ... + 10568.

Almost surely, 2^5791581 is an apocalyptic number.

It is an amenable number.

5791581 is a deficient number, since it is larger than the sum of its proper divisors (2943651).

5791581 is a wasteful number, since it uses less digits than its factorization.

5791581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 702 (or 693 counting only the distinct ones).

The product of its digits is 12600, while the sum is 36.

The square root of 5791581 is about 2406.5703812687. The cubic root of 5791581 is about 179.5832022987.

The spelling of 5791581 in words is "five million, seven hundred ninety-one thousand, five hundred eighty-one".