13198555 has 4 divisors (see below), whose sum is σ = 15838272. Its totient is φ = 10558840.

The previous prime is 13198553. The next prime is 13198621. The reversal of 13198555 is 55589131.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 13198555 - 2¹ = 13198553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13198553) 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 3 ways as a sum of consecutive naturals, for example, 1319851 + ... + 1319860.

It is an arithmetic number, because the mean of its divisors is an integer number (3959568).

Almost surely, 2^13198555 is an apocalyptic number.

13198555 is a deficient number, since it is larger than the sum of its proper divisors (2639717).

13198555 is an equidigital number, since it uses as much as digits as its factorization.

13198555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2639716.

The product of its digits is 27000, while the sum is 37.

The square root of 13198555 is about 3632.9815578943. The cubic root of 13198555 is about 236.3245260060.

The spelling of 13198555 in words is "thirteen million, one hundred ninety-eight thousand, five hundred fifty-five".