11516257 has 2 divisors, whose sum is σ = 11516258. Its totient is φ = 11516256.

The previous prime is 11516249. The next prime is 11516273. The reversal of 11516257 is 75261511.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10962721 + 553536 = 3311^2 + 744^2 .

It is a cyclic number.

It is not a de Polignac number, because 11516257 - 2³ = 11516249 is a prime.

It is not a weakly prime, because it can be changed into another prime (11516207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5758128 + 5758129.

It is an arithmetic number, because the mean of its divisors is an integer number (5758129).

Almost surely, 2^11516257 is an apocalyptic number.

It is an amenable number.

11516257 is a deficient number, since it is larger than the sum of its proper divisors (1).

11516257 is an equidigital number, since it uses as much as digits as its factorization.

11516257 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2100, while the sum is 28.

The square root of 11516257 is about 3393.5611089238. The cubic root of 11516257 is about 225.8241838800.

Adding to 11516257 its reverse (75261511), we get a palindrome (86777768).

The spelling of 11516257 in words is "eleven million, five hundred sixteen thousand, two hundred fifty-seven".