971315573 has 2 divisors, whose sum is σ = 971315574. Its totient is φ = 971315572.

The previous prime is 971315567. The next prime is 971315581. The reversal of 971315573 is 375513179.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 627101764 + 344213809 = 25042^2 + 18553^2 .

It is an emirp because it is prime and its reverse (375513179) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 971315573 - 2⁶ = 971315509 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 971315573.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (971315563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 485657786 + 485657787.

It is an arithmetic number, because the mean of its divisors is an integer number (485657787).

Almost surely, 2^971315573 is an apocalyptic number.

It is an amenable number.

971315573 is a deficient number, since it is larger than the sum of its proper divisors (1).

971315573 is an equidigital number, since it uses as much as digits as its factorization.

971315573 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 99225, while the sum is 41.

The square root of 971315573 is about 31165.9361001719. The cubic root of 971315573 is about 990.3456171780.

The spelling of 971315573 in words is "nine hundred seventy-one million, three hundred fifteen thousand, five hundred seventy-three".