5440941581 has 2 divisors, whose sum is σ = 5440941582. Its totient is φ = 5440941580.

The previous prime is 5440941559. The next prime is 5440941637. The reversal of 5440941581 is 1851490445.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5423586025 + 17355556 = 73645^2 + 4166^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5440941581 is a prime.

It is a super-2 number, since 2×5440941581² = 59207690575709559122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5440944581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2720470790 + 2720470791.

It is an arithmetic number, because the mean of its divisors is an integer number (2720470791).

Almost surely, 2^5440941581 is an apocalyptic number.

It is an amenable number.

5440941581 is a deficient number, since it is larger than the sum of its proper divisors (1).

5440941581 is an equidigital number, since it uses as much as digits as its factorization.

5440941581 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 115200, while the sum is 41.

The square root of 5440941581 is about 73762.7384320837. The cubic root of 5440941581 is about 1758.8333328938.

The spelling of 5440941581 in words is "five billion, four hundred forty million, nine hundred forty-one thousand, five hundred eighty-one".