2859540561 has 12 divisors (see below), whose sum is σ = 4130949888. Its totient is φ = 1906128504.

The previous prime is 2859540557. The next prime is 2859540577. The reversal of 2859540561 is 1650459582.

2859540561 is a `hidden beast` number, since 2 + 8 + 59 + 540 + 56 + 1 = 666.

It is not a de Polignac number, because 2859540561 - 2² = 2859540557 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2859540511) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 93376 + ... + 120158.

It is an arithmetic number, because the mean of its divisors is an integer number (344245824).

Almost surely, 2^2859540561 is an apocalyptic number.

It is an amenable number.

2859540561 is a deficient number, since it is larger than the sum of its proper divisors (1271409327).

2859540561 is a wasteful number, since it uses less digits than its factorization.

2859540561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38652 (or 38649 counting only the distinct ones).

The product of its (nonzero) digits is 432000, while the sum is 45.

The square root of 2859540561 is about 53474.6721448575. The cubic root of 2859540561 is about 1419.3802362199.

The spelling of 2859540561 in words is "two billion, eight hundred fifty-nine million, five hundred forty thousand, five hundred sixty-one".