11500161 has 8 divisors (see below), whose sum is σ = 16000320. Its totient is φ = 7333392.

The previous prime is 11500157. The next prime is 11500169. The reversal of 11500161 is 16100511.

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

It is not a de Polignac number, because 11500161 - 2² = 11500157 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 11500161.

It is not an unprimeable number, because it can be changed into a prime (11500169) 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 7 ways as a sum of consecutive naturals, for example, 83266 + ... + 83403.

It is an arithmetic number, because the mean of its divisors is an integer number (2000040).

Almost surely, 2^11500161 is an apocalyptic number.

It is an amenable number.

11500161 is a deficient number, since it is larger than the sum of its proper divisors (4500159).

11500161 is a wasteful number, since it uses less digits than its factorization.

11500161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166695.

The product of its (nonzero) digits is 30, while the sum is 15.

The square root of 11500161 is about 3391.1887296345. The cubic root of 11500161 is about 225.7189251189.

Adding to 11500161 its reverse (16100511), we get a palindrome (27600672).

The spelling of 11500161 in words is "eleven million, five hundred thousand, one hundred sixty-one".