997297159 has 2 divisors, whose sum is σ = 997297160. Its totient is φ = 997297158.

The previous prime is 997297139. The next prime is 997297193. The reversal of 997297159 is 951792799.

997297159 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is an emirp because it is prime and its reverse (951792799) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 997297159 - 2¹⁵ = 997264391 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (997297109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 498648579 + 498648580.

It is an arithmetic number, because the mean of its divisors is an integer number (498648580).

Almost surely, 2^997297159 is an apocalyptic number.

997297159 is a deficient number, since it is larger than the sum of its proper divisors (1).

997297159 is an equidigital number, since it uses as much as digits as its factorization.

997297159 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3214890, while the sum is 58.

The square root of 997297159 is about 31580.0120170971. The cubic root of 997297159 is about 999.0982400735.

The spelling of 997297159 in words is "nine hundred ninety-seven million, two hundred ninety-seven thousand, one hundred fifty-nine".