97712161 has 2 divisors, whose sum is σ = 97712162. Its totient is φ = 97712160.

The previous prime is 97712123. The next prime is 97712191. The reversal of 97712161 is 16121779.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 49617936 + 48094225 = 7044^2 + 6935^2 .

It is an emirp because it is prime and its reverse (16121779) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 97712161 - 2¹¹ = 97710113 is a prime.

It is not a weakly prime, because it can be changed into another prime (97712101) 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, 48856080 + 48856081.

It is an arithmetic number, because the mean of its divisors is an integer number (48856081).

Almost surely, 2^97712161 is an apocalyptic number.

It is an amenable number.

97712161 is a deficient number, since it is larger than the sum of its proper divisors (1).

97712161 is an equidigital number, since it uses as much as digits as its factorization.

97712161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5292, while the sum is 34.

The square root of 97712161 is about 9884.9461809359. The cubic root of 97712161 is about 460.5918044610.

The spelling of 97712161 in words is "ninety-seven million, seven hundred twelve thousand, one hundred sixty-one".