97205791 has 2 divisors, whose sum is σ = 97205792. Its totient is φ = 97205790.

The previous prime is 97205789. The next prime is 97205807. The reversal of 97205791 is 19750279.

It is a weak prime.

It is an emirp because it is prime and its reverse (19750279) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 97205791 - 2¹ = 97205789 is a prime.

Together with 97205789, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97205761) 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, 48602895 + 48602896.

It is an arithmetic number, because the mean of its divisors is an integer number (48602896).

Almost surely, 2^97205791 is an apocalyptic number.

97205791 is a deficient number, since it is larger than the sum of its proper divisors (1).

97205791 is an equidigital number, since it uses as much as digits as its factorization.

97205791 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 39690, while the sum is 40.

The square root of 97205791 is about 9859.2997215827. The cubic root of 97205791 is about 459.7947903205.

The spelling of 97205791 in words is "ninety-seven million, two hundred five thousand, seven hundred ninety-one".