13856253 has 4 divisors (see below), whose sum is σ = 18475008. Its totient is φ = 9237500.

The previous prime is 13856251. The next prime is 13856257. The reversal of 13856253 is 35265831.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 13856253 - 2¹ = 13856251 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13856251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2309373 + ... + 2309378.

It is an arithmetic number, because the mean of its divisors is an integer number (4618752).

Almost surely, 2^13856253 is an apocalyptic number.

It is an amenable number.

13856253 is a deficient number, since it is larger than the sum of its proper divisors (4618755).

13856253 is an equidigital number, since it uses as much as digits as its factorization.

13856253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4618754.

The product of its digits is 21600, while the sum is 33.

The square root of 13856253 is about 3722.3988233396. The cubic root of 13856253 is about 240.1865043352.

The spelling of 13856253 in words is "thirteen million, eight hundred fifty-six thousand, two hundred fifty-three".