11681451 has 24 divisors (see below), whose sum is σ = 17596800. Its totient is φ = 7459200.

The previous prime is 11681443. The next prime is 11681459. The reversal of 11681451 is 15418611.

It is an interprime number because it is at equal distance from previous prime (11681443) and next prime (11681459).

It is not a de Polignac number, because 11681451 - 2³ = 11681443 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11681459) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 41431 + ... + 41711.

It is an arithmetic number, because the mean of its divisors is an integer number (733200).

Almost surely, 2^11681451 is an apocalyptic number.

11681451 is a deficient number, since it is larger than the sum of its proper divisors (5915349).

11681451 is a wasteful number, since it uses less digits than its factorization.

11681451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 467 (or 464 counting only the distinct ones).

The product of its digits is 960, while the sum is 27.

The square root of 11681451 is about 3417.8137749152. The cubic root of 11681451 is about 226.8988338688.

The spelling of 11681451 in words is "eleven million, six hundred eighty-one thousand, four hundred fifty-one".