11481401 has 2 divisors, whose sum is σ = 11481402. Its totient is φ = 11481400.

The previous prime is 11481391. The next prime is 11481403. The reversal of 11481401 is 10418411.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7075600 + 4405801 = 2660^2 + 2099^2 .

It is a cyclic number.

It is not a de Polignac number, because 11481401 - 2²² = 7287097 is a prime.

It is a Sophie Germain prime.

Together with 11481403, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (11481403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5740700 + 5740701.

It is an arithmetic number, because the mean of its divisors is an integer number (5740701).

Almost surely, 2^11481401 is an apocalyptic number.

It is an amenable number.

11481401 is a deficient number, since it is larger than the sum of its proper divisors (1).

11481401 is an equidigital number, since it uses as much as digits as its factorization.

11481401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 128, while the sum is 20.

The square root of 11481401 is about 3388.4216089501. The cubic root of 11481401 is about 225.5961212824.

Adding to 11481401 its reverse (10418411), we get a palindrome (21899812).

The spelling of 11481401 in words is "eleven million, four hundred eighty-one thousand, four hundred one".