11161801 has 16 divisors (see below), whose sum is σ = 13089024. Its totient is φ = 9321984.

The previous prime is 11161789. The next prime is 11161807. The reversal of 11161801 is 10816111.

It is not a de Polignac number, because 11161801 - 2⁹ = 11161289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11161807) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 81405 + ... + 81541.

It is an arithmetic number, because the mean of its divisors is an integer number (818064).

Almost surely, 2^11161801 is an apocalyptic number.

It is an amenable number.

11161801 is a deficient number, since it is larger than the sum of its proper divisors (1927223).

11161801 is a wasteful number, since it uses less digits than its factorization.

11161801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 360.

The product of its (nonzero) digits is 48, while the sum is 19.

The square root of 11161801 is about 3340.9281644477. The cubic root of 11161801 is about 223.4831367912.

Adding to 11161801 its reverse (10816111), we get a palindrome (21977912).

The spelling of 11161801 in words is "eleven million, one hundred sixty-one thousand, eight hundred one".