12455553 has 16 divisors (see below), whose sum is σ = 18176256. Its totient is φ = 7524240.

The previous prime is 12455533. The next prime is 12455563. The reversal of 12455553 is 35555421.

It is a happy number.

It is not a de Polignac number, because 12455553 - 2¹³ = 12447361 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12455553.

It is not an unprimeable number, because it can be changed into a prime (12455503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19050 + ... + 19692.

It is an arithmetic number, because the mean of its divisors is an integer number (1136016).

Almost surely, 2^12455553 is an apocalyptic number.

It is an amenable number.

12455553 is a deficient number, since it is larger than the sum of its proper divisors (5720703).

12455553 is a wasteful number, since it uses less digits than its factorization.

12455553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1244.

The product of its digits is 15000, while the sum is 30.

The square root of 12455553 is about 3529.2425532967. The cubic root of 12455553 is about 231.8040420721.

The spelling of 12455553 in words is "twelve million, four hundred fifty-five thousand, five hundred fifty-three".