12055563 has 24 divisors (see below), whose sum is σ = 18895968. Its totient is φ = 7362432.

The previous prime is 12055553. The next prime is 12055577. The reversal of 12055563 is 36555021.

It is not a de Polignac number, because 12055563 - 2⁵ = 12055531 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12055513) 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, 19231 + ... + 19847.

It is an arithmetic number, because the mean of its divisors is an integer number (787332).

Almost surely, 2^12055563 is an apocalyptic number.

12055563 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

12055563 is a deficient number, since it is larger than the sum of its proper divisors (6840405).

12055563 is a wasteful number, since it uses less digits than its factorization.

12055563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 803 (or 800 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 27.

The square root of 12055563 is about 3472.1121813674. The cubic root of 12055563 is about 229.2956587446.

The spelling of 12055563 in words is "twelve million, fifty-five thousand, five hundred sixty-three".