12195554 has 16 divisors (see below), whose sum is σ = 20981376. Its totient is φ = 5208000.

The previous prime is 12195553. The next prime is 12195559. The reversal of 12195554 is 45559121.

12195554 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 12195554.

It is not an unprimeable number, because it can be changed into a prime (12195553) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2954 + ... + 5754.

It is an arithmetic number, because the mean of its divisors is an integer number (1311336).

Almost surely, 2^12195554 is an apocalyptic number.

12195554 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

12195554 is a deficient number, since it is larger than the sum of its proper divisors (8785822).

12195554 is a wasteful number, since it uses less digits than its factorization.

12195554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3121.

The product of its digits is 9000, while the sum is 32.

The square root of 12195554 is about 3492.2133382713. The cubic root of 12195554 is about 230.1797838176.

The spelling of 12195554 in words is "twelve million, one hundred ninety-five thousand, five hundred fifty-four".