5721641 has 8 divisors (see below), whose sum is σ = 6285120. Its totient is φ = 5184432.

The previous prime is 5721631. The next prime is 5721649. The reversal of 5721641 is 1461275.

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 5721641 - 2¹⁸ = 5459497 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 5721641.

It is not an unprimeable number, because it can be changed into a prime (5721649) 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, 6110 + ... + 6983.

It is an arithmetic number, because the mean of its divisors is an integer number (785640).

Almost surely, 2^5721641 is an apocalyptic number.

It is an amenable number.

5721641 is a deficient number, since it is larger than the sum of its proper divisors (563479).

5721641 is a wasteful number, since it uses less digits than its factorization.

5721641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13135.

The product of its digits is 1680, while the sum is 26.

The square root of 5721641 is about 2391.9951923029. The cubic root of 5721641 is about 178.8573814831.

The spelling of 5721641 in words is "five million, seven hundred twenty-one thousand, six hundred forty-one".