5636181 has 8 divisors (see below), whose sum is σ = 7533184. Its totient is φ = 3748320.

The previous prime is 5636177. The next prime is 5636201. The reversal of 5636181 is 1816365.

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

It is not a de Polignac number, because 5636181 - 2² = 5636177 is a prime.

It is a super-2 number, since 2×5636181² = 63533072529522, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5636131) 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, 685 + ... + 3426.

It is an arithmetic number, because the mean of its divisors is an integer number (941648).

Almost surely, 2^5636181 is an apocalyptic number.

5636181 is the 1371-st octagonal number.

It is an amenable number.

5636181 is a deficient number, since it is larger than the sum of its proper divisors (1897003).

5636181 is a wasteful number, since it uses less digits than its factorization.

5636181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4571.

The product of its digits is 4320, while the sum is 30.

The square root of 5636181 is about 2374.0642367046. The cubic root of 5636181 is about 177.9624231582.

The spelling of 5636181 in words is "five million, six hundred thirty-six thousand, one hundred eighty-one".