13127257 has 16 divisors (see below), whose sum is σ = 15805440. Its totient is φ = 10742400.

The previous prime is 13127251. The next prime is 13127263. The reversal of 13127257 is 75272131.

It is an interprime number because it is at equal distance from previous prime (13127251) and next prime (13127263).

It is a cyclic number.

It is not a de Polignac number, because 13127257 - 2³ = 13127249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13127251) 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 15 ways as a sum of consecutive naturals, for example, 4744 + ... + 6982.

It is an arithmetic number, because the mean of its divisors is an integer number (987840).

Almost surely, 2^13127257 is an apocalyptic number.

It is an amenable number.

13127257 is a deficient number, since it is larger than the sum of its proper divisors (2678183).

13127257 is a wasteful number, since it uses less digits than its factorization.

13127257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2304.

The product of its digits is 2940, while the sum is 28.

The square root of 13127257 is about 3623.1556687507. The cubic root of 13127257 is about 235.8982193016.

Adding to 13127257 its reverse (75272131), we get a palindrome (88399388).

The spelling of 13127257 in words is "thirteen million, one hundred twenty-seven thousand, two hundred fifty-seven".