2205565556 has 24 divisors (see below), whose sum is σ = 4004313600. Its totient is φ = 1061834400.

The previous prime is 2205565547. The next prime is 2205565573. The reversal of 2205565556 is 6555655022.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20015 + ... + 69366.

It is an arithmetic number, because the mean of its divisors is an integer number (166846400).

Almost surely, 2^2205565556 is an apocalyptic number.

It is an amenable number.

2205565556 is a deficient number, since it is larger than the sum of its proper divisors (1798748044).

2205565556 is a wasteful number, since it uses less digits than its factorization.

2205565556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89615 (or 89613 counting only the distinct ones).

The product of its (nonzero) digits is 450000, while the sum is 41.

The square root of 2205565556 is about 46963.4491493119. The cubic root of 2205565556 is about 1301.6872679273.

The spelling of 2205565556 in words is "two billion, two hundred five million, five hundred sixty-five thousand, five hundred fifty-six".