11117845 has 8 divisors (see below), whose sum is σ = 13419576. Its totient is φ = 8842176.

The previous prime is 11117833. The next prime is 11117857. The reversal of 11117845 is 54871111.

11117845 = T₆₀ + T₆₁ + ... + T₄₀₅.

It is an interprime number because it is at equal distance from previous prime (11117833) and next prime (11117857).

It can be written as a sum of positive squares in 4 ways, for example, as 1912689 + 9205156 = 1383^2 + 3034^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 11117845 - 2¹⁵ = 11085077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 5562 + ... + 7291.

It is an arithmetic number, because the mean of its divisors is an integer number (1677447).

Almost surely, 2^11117845 is an apocalyptic number.

It is an amenable number.

11117845 is a deficient number, since it is larger than the sum of its proper divisors (2301731).

11117845 is a wasteful number, since it uses less digits than its factorization.

11117845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13031.

The product of its digits is 1120, while the sum is 28.

The square root of 11117845 is about 3334.3432636728. The cubic root of 11117845 is about 223.1893864615.

Adding to 11117845 its reverse (54871111), we get a palindrome (65988956).

It can be divided in two parts, 111 and 17845, that added together give a square (17956 = 134²).

The spelling of 11117845 in words is "eleven million, one hundred seventeen thousand, eight hundred forty-five".