5671550721 has 8 divisors (see below), whose sum is σ = 7647035040. Its totient is φ = 3738550112.

The previous prime is 5671550683. The next prime is 5671550741. The reversal of 5671550721 is 1270551765.

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 5671550721 - 2¹⁹ = 5671026433 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 5671550721.

It is not an unprimeable number, because it can be changed into a prime (5671550741) 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, 10620615 + ... + 10621148.

It is an arithmetic number, because the mean of its divisors is an integer number (955879380).

Almost surely, 2^5671550721 is an apocalyptic number.

It is an amenable number.

5671550721 is a deficient number, since it is larger than the sum of its proper divisors (1975484319).

5671550721 is a wasteful number, since it uses less digits than its factorization.

5671550721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21241855.

The product of its (nonzero) digits is 73500, while the sum is 39.

The square root of 5671550721 is about 75309.6987180270. The cubic root of 5671550721 is about 1783.3391347605.

The spelling of 5671550721 in words is "five billion, six hundred seventy-one million, five hundred fifty thousand, seven hundred twenty-one".