13556245 has 8 divisors (see below), whose sum is σ = 16707384. Its totient is φ = 10551744.

The previous prime is 13556237. The next prime is 13556251. The reversal of 13556245 is 54265531.

It can be written as a sum of positive squares in 4 ways, for example, as 1674436 + 11881809 = 1294^2 + 3447^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13556245 - 2³ = 13556237 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 36454 + ... + 36823.

It is an arithmetic number, because the mean of its divisors is an integer number (2088423).

Almost surely, 2^13556245 is an apocalyptic number.

It is an amenable number.

13556245 is a deficient number, since it is larger than the sum of its proper divisors (3151139).

13556245 is an equidigital number, since it uses as much as digits as its factorization.

13556245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73319.

The product of its digits is 18000, while the sum is 31.

The square root of 13556245 is about 3681.8806335893. The cubic root of 13556245 is about 238.4403787756.

The spelling of 13556245 in words is "thirteen million, five hundred fifty-six thousand, two hundred forty-five".