11917241 has 6 divisors (see below), whose sum is σ = 13862970. Its totient is φ = 10214736.

The previous prime is 11917211. The next prime is 11917249. The reversal of 11917241 is 14271911.

It can be written as a sum of positive squares in only one way, i.e., 8976016 + 2941225 = 2996^2 + 1715^2 .

It is a de Polignac number, because none of the positive numbers 2^k-11917241 is a prime.

It is a super-3 number, since 3×11917241³ (a number of 22 digits) contains 333 as substring.

It is a Duffinian number.

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 11917241.

It is not an unprimeable number, because it can be changed into a prime (11917249) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 121556 + ... + 121653.

It is an arithmetic number, because the mean of its divisors is an integer number (2310495).

Almost surely, 2^11917241 is an apocalyptic number.

It is an amenable number.

11917241 is a deficient number, since it is larger than the sum of its proper divisors (1945729).

11917241 is an equidigital number, since it uses as much as digits as its factorization.

11917241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243223 (or 243216 counting only the distinct ones).

The product of its digits is 504, while the sum is 26.

The square root of 11917241 is about 3452.1357157563. The cubic root of 11917241 is about 228.4153261339.

The spelling of 11917241 in words is "eleven million, nine hundred seventeen thousand, two hundred forty-one".