12553555 has 12 divisors (see below), whose sum is σ = 17524080. Its totient is φ = 8607984.

The previous prime is 12553553. The next prime is 12553573. The reversal of 12553555 is 55535521.

It is a happy number.

It is not a de Polignac number, because 12553555 - 2¹ = 12553553 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12553553) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25375 + ... + 25864.

It is an arithmetic number, because the mean of its divisors is an integer number (1460340).

Almost surely, 2^12553555 is an apocalyptic number.

12553555 is a deficient number, since it is larger than the sum of its proper divisors (4970525).

12553555 is an equidigital number, since it uses as much as digits as its factorization.

12553555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51258 (or 51251 counting only the distinct ones).

The product of its digits is 18750, while the sum is 31.

The square root of 12553555 is about 3543.0996316785. The cubic root of 12553555 is about 232.4104098497.

The spelling of 12553555 in words is "twelve million, five hundred fifty-three thousand, five hundred fifty-five".