5631641 has 8 divisors (see below), whose sum is σ = 5990760. Its totient is φ = 5275648.

The previous prime is 5631629. The next prime is 5631671. The reversal of 5631641 is 1461365.

It can be written as a sum of positive squares in 4 ways, for example, as 4182025 + 1449616 = 2045^2 + 1204^2 .

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 5631641 - 2¹⁰ = 5630617 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a zygodrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 5631641.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5631601) 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, 3725 + ... + 5013.

It is an arithmetic number, because the mean of its divisors is an integer number (748845).

Almost surely, 2^5631641 is an apocalyptic number.

It is an amenable number.

5631641 is a deficient number, since it is larger than the sum of its proper divisors (359119).

5631641 is a wasteful number, since it uses less digits than its factorization.

5631641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1563.

The product of its digits is 2160, while the sum is 26.

The square root of 5631641 is about 2373.1078778682. The cubic root of 5631641 is about 177.9146268203.

The spelling of 5631641 in words is "five million, six hundred thirty-one thousand, six hundred forty-one".