2777240561 has 8 divisors (see below), whose sum is σ = 2801844864. Its totient is φ = 2752731520.

The previous prime is 2777240551. The next prime is 2777240579. The reversal of 2777240561 is 1650427772.

2777240561 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2777240561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2777240551) 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, 35396 + ... + 82506.

It is an arithmetic number, because the mean of its divisors is an integer number (350230608).

Almost surely, 2^2777240561 is an apocalyptic number.

It is an amenable number.

2777240561 is a deficient number, since it is larger than the sum of its proper divisors (24604303).

2777240561 is a wasteful number, since it uses less digits than its factorization.

2777240561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47631.

The product of its (nonzero) digits is 164640, while the sum is 41.

The square root of 2777240561 is about 52699.5309371915. The cubic root of 2777240561 is about 1405.6304817579.

The spelling of 2777240561 in words is "two billion, seven hundred seventy-seven million, two hundred forty thousand, five hundred sixty-one".