11681151 has 8 divisors (see below), whose sum is σ = 15597360. Its totient is φ = 7776192.

The previous prime is 11681129. The next prime is 11681167. The reversal of 11681151 is 15118611.

It is a happy number.

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

It is not a de Polignac number, because 11681151 - 2⁹ = 11680639 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11681191) 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, 21 + ... + 4833.

It is an arithmetic number, because the mean of its divisors is an integer number (1949670).

Almost surely, 2^11681151 is an apocalyptic number.

11681151 is a deficient number, since it is larger than the sum of its proper divisors (3916209).

11681151 is an equidigital number, since it uses as much as digits as its factorization.

11681151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5625.

The product of its digits is 240, while the sum is 24.

The square root of 11681151 is about 3417.7698869292. The cubic root of 11681151 is about 226.8968914665.

Adding to 11681151 its reverse (15118611), we get a palindrome (26799762).

The spelling of 11681151 in words is "eleven million, six hundred eighty-one thousand, one hundred fifty-one".