2204511556 has 96 divisors (see below), whose sum is σ = 4551966720. Its totient is φ = 925084800.

The previous prime is 2204511539. The next prime is 2204511557. The reversal of 2204511556 is 6551154022.

It is a super-2 number, since 2×2204511556² = 9719742401075082272, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is not an unprimeable number, because it can be changed into a prime (2204511557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5114661 + ... + 5115091.

It is an arithmetic number, because the mean of its divisors is an integer number (47416320).

Almost surely, 2^2204511556 is an apocalyptic number.

2204511556 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

2204511556 is an abundant number, since it is smaller than the sum of its proper divisors (2347455164).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2204511556 is a wasteful number, since it uses less digits than its factorization.

2204511556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 665 (or 663 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 31.

The square root of 2204511556 is about 46952.2263156924. The cubic root of 2204511556 is about 1301.4798839327.

Adding to 2204511556 its reverse (6551154022), we get a palindrome (8755665578).

The spelling of 2204511556 in words is "two billion, two hundred four million, five hundred eleven thousand, five hundred fifty-six".