13256751 has 4 divisors (see below), whose sum is σ = 17675672. Its totient is φ = 8837832.

The previous prime is 13256723. The next prime is 13256759. The reversal of 13256751 is 15765231.

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

It is not a de Polignac number, because 13256751 - 2⁹ = 13256239 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13256759) 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, 2209456 + ... + 2209461.

It is an arithmetic number, because the mean of its divisors is an integer number (4418918).

Almost surely, 2^13256751 is an apocalyptic number.

13256751 is a deficient number, since it is larger than the sum of its proper divisors (4418921).

13256751 is an equidigital number, since it uses as much as digits as its factorization.

13256751 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4418920.

The product of its digits is 6300, while the sum is 30.

The square root of 13256751 is about 3640.9821477178. The cubic root of 13256751 is about 236.6713563399.

The spelling of 13256751 in words is "thirteen million, two hundred fifty-six thousand, seven hundred fifty-one".