13257771 has 8 divisors (see below), whose sum is σ = 17704080. Its totient is φ = 8824992.

The previous prime is 13257743. The next prime is 13257781. The reversal of 13257771 is 17775231.

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

It is not a de Polignac number, because 13257771 - 2⁹ = 13257259 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (13257731) 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 7 ways as a sum of consecutive naturals, for example, 816 + ... + 5213.

It is an arithmetic number, because the mean of its divisors is an integer number (2213010).

Almost surely, 2^13257771 is an apocalyptic number.

13257771 is a deficient number, since it is larger than the sum of its proper divisors (4446309).

13257771 is an equidigital number, since it uses as much as digits as its factorization.

13257771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6765.

The product of its digits is 10290, while the sum is 33.

The square root of 13257771 is about 3641.1222171193. The cubic root of 13257771 is about 236.6774261678.

It can be divided in two parts, 13257 and 771, that added together give a triangular number (14028 = T₁₆₇).

The spelling of 13257771 in words is "thirteen million, two hundred fifty-seven thousand, seven hundred seventy-one".