11171261 has 8 divisors (see below), whose sum is σ = 12343104. Its totient is φ = 10056640.

The previous prime is 11171243. The next prime is 11171267. The reversal of 11171261 is 16217111.

It is a happy number.

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 11171261 - 2¹⁴ = 11154877 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11171267) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13895 + ... + 14676.

It is an arithmetic number, because the mean of its divisors is an integer number (1542888).

Almost surely, 2^11171261 is an apocalyptic number.

It is an amenable number.

11171261 is a deficient number, since it is larger than the sum of its proper divisors (1171843).

11171261 is a wasteful number, since it uses less digits than its factorization.

11171261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28611.

The product of its digits is 84, while the sum is 20.

The square root of 11171261 is about 3342.3436388259. The cubic root of 11171261 is about 223.5462554428.

Adding to 11171261 its reverse (16217111), we get a palindrome (27388372).

The spelling of 11171261 in words is "eleven million, one hundred seventy-one thousand, two hundred sixty-one".