5571928861 has 4 divisors (see below), whose sum is σ = 5576226172. Its totient is φ = 5567631552.

The previous prime is 5571928837. The next prime is 5571928867. The reversal of 5571928861 is 1688291755.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4453026361 + 1118902500 = 66731^2 + 33450^2 .

It is a cyclic number.

It is not a de Polignac number, because 5571928861 - 2¹¹ = 5571926813 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 5571928799 and 5571928808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5571928867) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2146710 + ... + 2149303.

It is an arithmetic number, because the mean of its divisors is an integer number (1394056543).

Almost surely, 2^5571928861 is an apocalyptic number.

It is an amenable number.

5571928861 is a deficient number, since it is larger than the sum of its proper divisors (4297311).

5571928861 is a wasteful number, since it uses less digits than its factorization.

5571928861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4297310.

The product of its digits is 1209600, while the sum is 52.

The square root of 5571928861 is about 74645.3539143596. The cubic root of 5571928861 is about 1772.8358321334.

The spelling of 5571928861 in words is "five billion, five hundred seventy-one million, nine hundred twenty-eight thousand, eight hundred sixty-one".