11315257 has 4 divisors (see below), whose sum is σ = 11340160. Its totient is φ = 11290356.

The previous prime is 11315237. The next prime is 11315267. The reversal of 11315257 is 75251311.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11315257 - 2¹¹ = 11313209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11315207) 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, 11757 + ... + 12682.

It is an arithmetic number, because the mean of its divisors is an integer number (2835040).

Almost surely, 2^11315257 is an apocalyptic number.

It is an amenable number.

11315257 is a deficient number, since it is larger than the sum of its proper divisors (24903).

11315257 is an equidigital number, since it uses as much as digits as its factorization.

11315257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24902.

The product of its digits is 1050, while the sum is 25.

The square root of 11315257 is about 3363.8158391922. The cubic root of 11315257 is about 224.5026512452.

Adding to 11315257 its reverse (75251311), we get a palindrome (86566568).

The spelling of 11315257 in words is "eleven million, three hundred fifteen thousand, two hundred fifty-seven".