2555540566 has 8 divisors (see below), whose sum is σ = 3836413440. Its totient is φ = 1276736088.

The previous prime is 2555540551. The next prime is 2555540587. The reversal of 2555540566 is 6650455552.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 514006 + ... + 518953.

It is an arithmetic number, because the mean of its divisors is an integer number (479551680).

Almost surely, 2^2555540566 is an apocalyptic number.

2555540566 is a deficient number, since it is larger than the sum of its proper divisors (1280872874).

2555540566 is a wasteful number, since it uses less digits than its factorization.

2555540566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1034198.

The product of its (nonzero) digits is 900000, while the sum is 43.

The square root of 2555540566 is about 50552.3547028227. The cubic root of 2555540566 is about 1367.1859701571.

The spelling of 2555540566 in words is "two billion, five hundred fifty-five million, five hundred forty thousand, five hundred sixty-six".