11161003 has 16 divisors (see below), whose sum is σ = 13418496. Its totient is φ = 9076320.

The previous prime is 11161001. The next prime is 11161009. The reversal of 11161003 is 30016111.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 11161003 - 2¹ = 11161001 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11161001) 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 15 ways as a sum of consecutive naturals, for example, 28950 + ... + 29332.

It is an arithmetic number, because the mean of its divisors is an integer number (838656).

Almost surely, 2^11161003 is an apocalyptic number.

11161003 is a deficient number, since it is larger than the sum of its proper divisors (2257493).

11161003 is a wasteful number, since it uses less digits than its factorization.

11161003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 594.

The product of its (nonzero) digits is 18, while the sum is 13.

The square root of 11161003 is about 3340.8087344234. The cubic root of 11161003 is about 223.4778107752.

Adding to 11161003 its reverse (30016111), we get a palindrome (41177114).

The spelling of 11161003 in words is "eleven million, one hundred sixty-one thousand, three".