11126513 has 4 divisors (see below), whose sum is σ = 11251620. Its totient is φ = 11001408.

The previous prime is 11126497. The next prime is 11126519. The reversal of 11126513 is 31562111.

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 1216609 + 9909904 = 1103^2 + 3148^2 .

It is a cyclic number.

It is not a de Polignac number, because 11126513 - 2⁴ = 11126497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11126519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62420 + ... + 62597.

It is an arithmetic number, because the mean of its divisors is an integer number (2812905).

Almost surely, 2^11126513 is an apocalyptic number.

It is an amenable number.

11126513 is a deficient number, since it is larger than the sum of its proper divisors (125107).

11126513 is an equidigital number, since it uses as much as digits as its factorization.

11126513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125106.

The product of its digits is 180, while the sum is 20.

The square root of 11126513 is about 3335.6428166097. The cubic root of 11126513 is about 223.2473744094.

Adding to 11126513 its reverse (31562111), we get a palindrome (42688624).

The spelling of 11126513 in words is "eleven million, one hundred twenty-six thousand, five hundred thirteen".