2655600561 has 24 divisors (see below), whose sum is σ = 3918096000. Its totient is φ = 1732714272.

The previous prime is 2655600559. The next prime is 2655600581. The reversal of 2655600561 is 1650065562.

It is a happy number.

It is not a de Polignac number, because 2655600561 - 2¹ = 2655600559 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2655600511) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 110680 + ... + 132518.

It is an arithmetic number, because the mean of its divisors is an integer number (163254000).

Almost surely, 2^2655600561 is an apocalyptic number.

It is an amenable number.

2655600561 is a deficient number, since it is larger than the sum of its proper divisors (1262495439).

2655600561 is a wasteful number, since it uses less digits than its factorization.

2655600561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22133 (or 22130 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 36.

The square root of 2655600561 is about 51532.5194513135. The cubic root of 2655600561 is about 1384.8016869067.

The spelling of 2655600561 in words is "two billion, six hundred fifty-five million, six hundred thousand, five hundred sixty-one".