11782541 has 2 divisors, whose sum is σ = 11782542. Its totient is φ = 11782540.

The previous prime is 11782523. The next prime is 11782543. The reversal of 11782541 is 14528711.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10824100 + 958441 = 3290^2 + 979^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11782541 is a prime.

Together with 11782543, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11782543) 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, 5891270 + 5891271.

It is an arithmetic number, because the mean of its divisors is an integer number (5891271).

Almost surely, 2^11782541 is an apocalyptic number.

It is an amenable number.

11782541 is a deficient number, since it is larger than the sum of its proper divisors (1).

11782541 is an equidigital number, since it uses as much as digits as its factorization.

11782541 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2240, while the sum is 29.

The square root of 11782541 is about 3432.5706110727. The cubic root of 11782541 is about 227.5514740830.

The spelling of 11782541 in words is "eleven million, seven hundred eighty-two thousand, five hundred forty-one".