11117261 has 4 divisors (see below), whose sum is σ = 11702400. Its totient is φ = 10532124.

The previous prime is 11117213. The next prime is 11117321. The reversal of 11117261 is 16271111.

It is a happy number.

11117261 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 16271111 = 271 ⋅60041.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11117261 is a prime.

It is a super-3 number, since 3×11117261³ (a number of 22 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11117761) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 292541 + ... + 292578.

It is an arithmetic number, because the mean of its divisors is an integer number (2925600).

Almost surely, 2^11117261 is an apocalyptic number.

It is an amenable number.

11117261 is a deficient number, since it is larger than the sum of its proper divisors (585139).

11117261 is an equidigital number, since it uses as much as digits as its factorization.

11117261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 585138.

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

The square root of 11117261 is about 3334.2556890557. The cubic root of 11117261 is about 223.1854784834.

Adding to 11117261 its reverse (16271111), we get a palindrome (27388372).

The spelling of 11117261 in words is "eleven million, one hundred seventeen thousand, two hundred sixty-one".