72011441 has 2 divisors, whose sum is σ = 72011442. Its totient is φ = 72011440.

The previous prime is 72011431. The next prime is 72011449. The reversal of 72011441 is 14411027.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 71656225 + 355216 = 8465^2 + 596^2 .

It is a cyclic number.

It is not a de Polignac number, because 72011441 - 2⁶ = 72011377 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (72011449) 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, 36005720 + 36005721.

It is an arithmetic number, because the mean of its divisors is an integer number (36005721).

Almost surely, 2^72011441 is an apocalyptic number.

It is an amenable number.

72011441 is a deficient number, since it is larger than the sum of its proper divisors (1).

72011441 is an equidigital number, since it uses as much as digits as its factorization.

72011441 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 224, while the sum is 20.

The square root of 72011441 is about 8485.9555148492. The cubic root of 72011441 is about 416.0387988498.

Adding to 72011441 its reverse (14411027), we get a palindrome (86422468).

The spelling of 72011441 in words is "seventy-two million, eleven thousand, four hundred forty-one".