97219601 has 2 divisors, whose sum is σ = 97219602. Its totient is φ = 97219600.

The previous prime is 97219531. The next prime is 97219621. The reversal of 97219601 is 10691279.

It is a Cunningham number, because it is equal to 9860²+1.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 97219600 + 1 = 9860^2 + 1^2 .

It is an emirp because it is prime and its reverse (10691279) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 97219601 - 2¹⁴ = 97203217 is a prime.

It is not a weakly prime, because it can be changed into another prime (97219621) 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, 48609800 + 48609801.

It is an arithmetic number, because the mean of its divisors is an integer number (48609801).

Almost surely, 2^97219601 is an apocalyptic number.

It is an amenable number.

97219601 is a deficient number, since it is larger than the sum of its proper divisors (1).

97219601 is an equidigital number, since it uses as much as digits as its factorization.

97219601 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6804, while the sum is 35.

The square root of 97219601 is about 9860.0000507099. Note that the first 4 decimals coincide. The cubic root of 97219601 is about 459.8165635959.

The spelling of 97219601 in words is "ninety-seven million, two hundred nineteen thousand, six hundred one".