11542081 has 2 divisors, whose sum is σ = 11542082. Its totient is φ = 11542080.

The previous prime is 11542079. The next prime is 11542093. The reversal of 11542081 is 18024511.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10137856 + 1404225 = 3184^2 + 1185^2 .

It is a cyclic number.

It is not a de Polignac number, because 11542081 - 2¹ = 11542079 is a prime.

It is a super-2 number, since 2×11542081² = 266439267621122, which contains 22 as substring.

Together with 11542079, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (11542001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5771040 + 5771041.

It is an arithmetic number, because the mean of its divisors is an integer number (5771041).

Almost surely, 2^11542081 is an apocalyptic number.

It is an amenable number.

11542081 is a deficient number, since it is larger than the sum of its proper divisors (1).

11542081 is an equidigital number, since it uses as much as digits as its factorization.

11542081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 320, while the sum is 22.

The square root of 11542081 is about 3397.3638309725. The cubic root of 11542081 is about 225.9928535605.

Adding to 11542081 its reverse (18024511), we get a palindrome (29566592).

The spelling of 11542081 in words is "eleven million, five hundred forty-two thousand, eighty-one".