13256501 has 4 divisors (see below), whose sum is σ = 13273932. Its totient is φ = 13239072.

The previous prime is 13256449. The next prime is 13256527. The reversal of 13256501 is 10565231.

13256501 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 3960100 + 9296401 = 1990^2 + 3049^2 .

It is a cyclic number.

It is not a de Polignac number, because 13256501 - 2¹⁰ = 13255477 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 (13256401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7520 + ... + 9113.

It is an arithmetic number, because the mean of its divisors is an integer number (3318483).

Almost surely, 2^13256501 is an apocalyptic number.

It is an amenable number.

13256501 is a deficient number, since it is larger than the sum of its proper divisors (17431).

13256501 is an equidigital number, since it uses as much as digits as its factorization.

13256501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17430.

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 13256501 is about 3640.9478161600. The cubic root of 13256501 is about 236.6698685894.

The spelling of 13256501 in words is "thirteen million, two hundred fifty-six thousand, five hundred one".