5638361 has 8 divisors (see below), whose sum is σ = 5831784. Its totient is φ = 5447680.

The previous prime is 5638357. The next prime is 5638363. The reversal of 5638361 is 1638365.

It can be written as a sum of positive squares in 4 ways, for example, as 490000 + 5148361 = 700^2 + 2269^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 5638361 - 2² = 5638357 is a prime.

It is a super-2 number, since 2×5638361² = 63582229532642, which contains 22 as substring.

It is an Ulam number.

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

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5638363) 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, 4025 + ... + 5241.

It is an arithmetic number, because the mean of its divisors is an integer number (728973).

Almost surely, 2^5638361 is an apocalyptic number.

It is an amenable number.

5638361 is a deficient number, since it is larger than the sum of its proper divisors (193423).

5638361 is a wasteful number, since it uses less digits than its factorization.

5638361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1371.

The product of its digits is 12960, while the sum is 32.

The square root of 5638361 is about 2374.5233205846. The cubic root of 5638361 is about 177.9853647017.

The spelling of 5638361 in words is "five million, six hundred thirty-eight thousand, three hundred sixty-one".