13256011 has 4 divisors (see below), whose sum is σ = 13267800. Its totient is φ = 13244224.

The previous prime is 13255999. The next prime is 13256029. The reversal of 13256011 is 11065231.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11065231 = 23 ⋅481097.

It is a cyclic number.

It is not a de Polignac number, because 13256011 - 2⁹ = 13255499 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13256011.

It is not an unprimeable number, because it can be changed into a prime (13256071) 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 3 ways as a sum of consecutive naturals, for example, 4006 + ... + 6523.

It is an arithmetic number, because the mean of its divisors is an integer number (3316950).

Almost surely, 2^13256011 is an apocalyptic number.

13256011 is a deficient number, since it is larger than the sum of its proper divisors (11789).

13256011 is a wasteful number, since it uses less digits than its factorization.

13256011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11788.

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 13256011 is about 3640.8805253675. The cubic root of 13256011 is about 236.6669525443. Note that the first 3 decimals are identical.

The spelling of 13256011 in words is "thirteen million, two hundred fifty-six thousand, eleven".