11261147 has 4 divisors (see below), whose sum is σ = 11303280. Its totient is φ = 11219016.

The previous prime is 11261143. The next prime is 11261171. The reversal of 11261147 is 74116211.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11261147 - 2² = 11261143 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11261143) 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, 20663 + ... + 21200.

It is an arithmetic number, because the mean of its divisors is an integer number (2825820).

Almost surely, 2^11261147 is an apocalyptic number.

11261147 is a deficient number, since it is larger than the sum of its proper divisors (42133).

11261147 is an equidigital number, since it uses as much as digits as its factorization.

11261147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42132.

The product of its digits is 336, while the sum is 23.

The square root of 11261147 is about 3355.7632514824. The cubic root of 11261147 is about 224.1442191484.

Adding to 11261147 its reverse (74116211), we get a palindrome (85377358).

The spelling of 11261147 in words is "eleven million, two hundred sixty-one thousand, one hundred forty-seven".