2744057561 has 16 divisors (see below), whose sum is σ = 3193086336. Its totient is φ = 2309510016.

The previous prime is 2744057557. The next prime is 2744057581. The reversal of 2744057561 is 1657504472.

It is a cyclic number.

It is not a de Polignac number, because 2744057561 - 2² = 2744057557 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2744057551) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 139445 + ... + 157901.

It is an arithmetic number, because the mean of its divisors is an integer number (199567896).

Almost surely, 2^2744057561 is an apocalyptic number.

It is an amenable number.

2744057561 is a deficient number, since it is larger than the sum of its proper divisors (449028775).

2744057561 is a wasteful number, since it uses less digits than its factorization.

2744057561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18848.

The product of its (nonzero) digits is 235200, while the sum is 41.

The square root of 2744057561 is about 52383.7528342520. The cubic root of 2744057561 is about 1400.0097892173.

The spelling of 2744057561 in words is "two billion, seven hundred forty-four million, fifty-seven thousand, five hundred sixty-one".